Mathematics: Find x for 3x + 10 = -5 and find x for 3x - 12 = 9 please help

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Find x for 3x + 10 = -5 and find x for 3x - 12 = - id3105312911885744, smokemicpot

krissy1221

10.04.2021

1. x=-5

2. x=7

Step-by-step explanation:

First Equation

1. For the first equation, 3x+10=-5 we need to move all the constants to one side.

$3x+10=-5\\3x=-15$

2. Once that is done, we need to divide both sides by 3 to get by itself.

$3x=-15\\\frac{3x}{3}=\frac{-15}{3}$

3. Now, we have our final answer.

x=-5

Second Equation

1. For the second equation, 3x-12=9 we need to move all the constants to one side.

$3x-12=9\\3x=21$

2. Once that is done, we need to divide both sides by 3 to get by itself.

$3x=21\\\frac{3x}{3} =\frac{21}{3}$

3. Now, we have our final answer.

x=7

Hope this helped C:

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