7+8=x-4

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Solution for 7+8=x-4 equation:



7+8=x-4
We move all terms to the left:
7+8-(x-4)=0
We add all the numbers together, and all the variables
-(x-4)+15=0
We get rid of parentheses
-x+4+15=0
We add all the numbers together, and all the variables
-1x+19=0
We move all terms containing x to the left, all other terms to the right
-x=-19
x=-19/-1
x=+19

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