Hsteele810 Hsteele810

04-09-2019
Mathematics

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I need to solve for 3x+7=-x-1

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Аноним Аноним

04-09-2019

3x+7=-x-1

move -x to the other side

sign changes from -x to +x

3x+x+7=-x+x-1

3x+x+7=-1

4x+7=-1

move 7 to the other side

sign changes from +7 to -7

4x+7-7=-1-7

4x=-8

Divide by 4 for both sides

4x/4=-8/4

Answer: x=-2

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