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o-na [289]
2 years ago
10

3(x+1)=2(x-1) solve for x

Mathematics
2 answers:
pshichka [43]2 years ago
5 0

Answer:

x = -5

Step-by-step explanation:

3(1 + x) = 2(x + -1)

(1 * 3 + x * 3) = 2(x + -1)

(3 + 3x) = 2(x + -1)

Reorder the terms:

3 + 3x = 2(-1 + x)

3 + 3x = (-1 * 2 + x * 2)

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

Solving :the equation

3 + 3x = -2 + 2x

add '-2x' to each side of the equation.

3 + 3x + -2x = -2 + 2x + -2x  

Combine like terms: 3x + -2x = x

3 + x = -2 + 2x + -2x

combine like terms: 2x + -2x = 0

3 + x = -2 + 0

3 + x = -2

Add '-3' to each side of the equation.

3 + -3 + x = -2 + -3

Combine like terms: 3 + -3 = 0

0 + x = -2 + -3

x = -2 + -3  

Combine like terms: -2 + -3 = -5

x = -5  

divide each side by '1'.

x = -5

alukav5142 [94]2 years ago
3 0
X=-5
3(x+1)=2(x-1)
3x+3=2x-2
x=-5

If you still don’t understand, the picture has the more detailed work

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Use the image below to describe at least three different ratios, written in simplest form. Include at least one part-to-part rat
9966 [12]

The different ratios are 2 : 7, 2 : 9 and 7 : 9

<h3>How to determine the ratio?</h3>

The statement is given as:

8 out of 36 squares unfilled

This means that:

  • There are 36 squares
  • 8 are unfilled
  • 28 are filled

The part-to-part ratio is represented as:

Ratio = Unfilled : Filled

This gives

Unfilled : Filled = 8 : 28

Simplify

Unfilled : Filled = 2 : 7

The part-to-whole ratios are represented as:

Ratio = Unfilled : Total

Ratio = Filled : Total

So, we have:

Unfilled : Total = 8 : 36

Filled : Total = 28 : 36

Simplify

Unfilled : Total = 2 : 9

Filled : Total = 7 : 9

Hence, the different ratios are 2 : 7, 2 : 9 and 7 : 9

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6 0
2 years ago
Three coins are tossed in the air, one at a time. What is the probability that the third coin will be heads?
marishachu [46]

Answer:

1/2

Step-by-step explanation:

We only care about the third coin

we could get heads or tails on the third flip

P (third coin will be heads) = outcome heads / total

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8 0
2 years ago
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If m 180<br> °<br> then <br> A. <br> Obtuse<br><br> B. <br> Vertical<br><br> C. <br> Complementary<br><br> D. <br> Supplementary
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6 0
3 years ago
Please don't delete my question! Here they are:
Alinara [238K]

Answer:

1. 14/15

2. 5 7/8

3. 81.25%

Step-by-step explanation:

1. (fraction) 7/9 divided by 5/6 (fraction)

7/9 ÷ 5/6 =

= 7/9 * 6/5

= (7 * 6)/(9 * 5)

= 42/45

= 14/15

2.

1 3/8 + 4 1/2 =

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= 5 7/8

3.

percent = part divide by whole times 100

13/16 * 100 =

= 81.25%

4 0
3 years ago
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16/21 divided by 4/9
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16/21 divided by 4/9 is equivalent to 16/21 x 9/4 = 144/84 which reduces to 12/7. So 12/7 is your answer.
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