4x+40=-x-100

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Solution for 4x+40=-x-100 equation: 



4x+40=-x-100

We move all terms to the left:

4x+40-(-x-100)=0

We add all the numbers together, and all the variables

4x-(-1x-100)+40=0

We get rid of parentheses

4x+1x+100+40=0

We add all the numbers together, and all the variables

5x+140=0

We move all terms containing x to the left, all other terms to the right

5x=-140

x=-140/5

x=-28

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