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4 years ago

5

Use the values x = -4, 0, 5 to prove your solution to the equation 5 + x - 12 = x - 7. In your final answer, include all of your

calculations.

1 answer:

Mandarinka [93]4 years ago

6 0

X=-4 x=0 x=5
5-4-12=-4-7 5+0-12=0-7 5+5-12=5-7
-11=-11 -7=-7 -2=-2

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The percent change would be 36%

<h3>What is percent change?</h3>

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2 years ago

The sum of two numbers is 42. The smaller number is 6 less than the larger number. What are the numbers?

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Set up a system of equations to model this problem:

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The easiest way to solve this system of equations would be to solve for y in the second equation, and substitute that value in for the first.

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<em>*Divide both sides by -1*</em>

y=3x-20

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<em>*Combine likes terms*</em>

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<em>*Divide both sides by 5*</em>

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Now, plug x into the first equation, and solve for y.

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Hope this helps!!

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