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(8+12x)+(-4+10x)=150
We move all terms to the left:
(8+12x)+(-4+10x)-(150)=0
We add all the numbers together, and all the variables
(12x+8)+(10x-4)-150=0
We get rid of parentheses
12x+10x+8-4-150=0
We add all the numbers together, and all the variables
22x-146=0
We move all terms containing x to the left, all other terms to the right
22x=146
x=146/22
x=6+7/11
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