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x+(x+2)+(x+4)=x+4-30
We move all terms to the left:
x+(x+2)+(x+4)-(x+4-30)=0
We add all the numbers together, and all the variables
x+(x+2)+(x+4)-(x-26)=0
We get rid of parentheses
x+x+x-x+2+4+26=0
We add all the numbers together, and all the variables
2x+32=0
We move all terms containing x to the left, all other terms to the right
2x=-32
x=-32/2
x=-16
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