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Elenna [48]
2 years ago
13

What is the value of x in the equation -2/9x=2/5

Mathematics
2 answers:
densk [106]2 years ago
7 0

Answer:

x = (-9)/5

Step-by-step explanation:

Solve for x:

(-2 x)/9 = 2/5

Hint: | Multiply both sides by a constant to simplify the equation.

Multiply both sides of (-2 x)/9 = 2/5 by -9/2:

(-9 (-2) x)/(2×9) = (-9)/2×2/5

Hint: | Express (-9)/2×(-2)/9 as a single fraction.

(-9)/2×(-2)/9 = (-9 (-2))/(2×9):

(-9 (-2))/(2×9) x = (-9)/2×2/5

Hint: | Express (-9)/2×2/5 as a single fraction.

(-9)/2×2/5 = (-9×2)/(2×5):

(-9 (-2) x)/(2×9) = (-9×2)/(2×5)

Hint: | In (-9 (-2) x)/(2×9), divide -9 in the numerator by 9 in the denominator.

(-9)/9 = (9 (-1))/9 = -1:

(-2-1 x)/2 = (-9×2)/(2×5)

Hint: | In (-(-2) x)/2, divide -2 in the numerator by 2 in the denominator.

(-2)/2 = (2 (-1))/2 = -1:

--1 x = (-9×2)/(2×5)

Hint: | Multiply all instances of -1 in -(-x).

(-1)^2 = 1:

x = (-9×2)/(2×5)

Hint: | Cancel common terms in the numerator and denominator of (-9×2)/(2×5).

(-9×2)/(2×5) = 2/2×(-9)/5 = (-9)/5:

Answer: x = (-9)/5

anastassius [24]2 years ago
4 0

Answer:

\frac{ - 2}{9} x =  \frac{2}{5}  \\ x =  \frac{2}{5}  \times  \frac{9}{(- 2)}  \\  \boxed{x =  \frac{(-9)}{5}}✓

<h3><u>x=-9/5</u> is the right answer.</h3>
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Which equation has the solution x = 3?
arsen [322]
Well, let's first solve each equation:

1.) -4x + 6 - 3x = 12 - 2x - 3x

To start, combine each like-term on each side of the equal sign (The numbers with variables in-common // the numbers alike on the same side of the equal sign):

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Now, we get the two terms with variables attached to them, on the same side, so, we do the opposite of subtraction, which is, addition:

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Next, you do the opposite of addition, which is, subtraction, and, subtract 6 from both sides:

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So, the answer is not 'A.'
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Now, we test out the rest of the equations, the exact same way:

2.) 4x + 6 + 3x = 12 + 2x + 3x

Combine your like-terms, on each side of the equal sign:

7x + 6 = 12 + 5x

Now, get both terms, with the variable, 'x,' to the same side, and, to do that, do the opposite of addition, which is, subtraction:

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Next, subtract 6 from both sides:

2x + 6 = 12
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Finally, divide by 2, on both sides:

2x = 6
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So, the answer is 'B.'
_________________________________________

3.) 4x + 6 - 3x = 12 - 2x - 3x

Again, we combine the like-terms, on both sides of the equal sign:

x + 6 = 12 - 5x

Now, we get both terms with the variable 'x,' to the same side, and, the opposite of subtraction, is addition, so, we're going to add 5x to both sides:

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Now, we subtract 6 from each side, because, the opposite of addition, is subtraction:

6x + 6 = 12
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Now, divide by 6, on both sides:

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So, the answer is not 'C.'
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Next, we get both terms, with the variable, 'x,' to the same side:

x + 6 = 17x
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Now, divide by 16, on both sides:

X = 3/8

So, 'D,' is not the answer.
_______________________

The answer is, 'B.'

I hope this helps!
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Yuuma applied the steps below to find the product of (-10.2)(-16.4). Step 1: (-10.2)(-16.4) = (-16.4)(-10.2). Step 2: =(-16.4)(-
kifflom [539]

Answer:

It's D hope it helps

Step-by-step explanation:

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