7x+x-3x=-25

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Solution for 7x+x-3x=-25 equation: 



7x+x-3x=-25

We move all terms to the left:

7x+x-3x-(-25)=0

We add all the numbers together, and all the variables

5x+25=0

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

5x=-25

x=-25/5

x=-5

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