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Step2247 [10]
3 years ago
15

2(3x-9)=2x+10 what's x

Mathematics
2 answers:
Deffense [45]3 years ago
6 0

Answer:

x = 7

Step-by-step explanation:

In order to find the value of x, isolate it in the equation.

1) First, distribute the 2 to the terms inside the set of parentheses.

2 (3x - 9) = 2x + 10 \\6x - 18 = 2x + 10 \\

2) Next, move all the x terms to one side and all the other terms to the other side. Subtract both sides by 2x and add both sides by 18.

6x - 18 = 2x + 10 \\4x = 28

2) Divide both sides by 4 to finally isolate x.

4x = 28 \\x = 7

Thus, x = 7.

Vikentia [17]3 years ago
4 0

Answer:

x = 7

Step-by-step explanation:

2(3x-9)=2x+10

6x - 18 = 2x + 10

4x = 28

x = 7

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Which equation represents this number sentence? The quotient of 7 and a number is 10 less than 3 times the number.
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4 years ago
7) -6x + 6y=6<br> -6x + 3y=-12
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Answer:

(5,6)

Step-by-step explanation:

-6x+6y=6

-6x + 3y =-12

Multiply the first equation by -1

6x-6y=-6

Add this to the second equation

6x-6y=-6

-6x + 3y =-12

---------------------

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Divide each side by -3

-3y/-3 = -18/-3

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Now we need to find x

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3 0
4 years ago
Explicit and Recursive Functions:
aleksandr82 [10.1K]
In this problem we need to find the value of a and b. So given that t<span>he function should be in the form f(n) = an + b and we know each value of n, then out goal is to find a and b.

For getting this purpose, we need to find a system of two equations (given that we have two unknown variables)

Therefore:

(1) f(0) = a(1) + b = 18
</span>∴ a + b = 18
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(2) f(1) = a(2) + b = 24
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Solving for a and b we have:

a = 6
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f(n) = 6n + 12</span>
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