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10x+12x-30=150-5x
We move all terms to the left:
10x+12x-30-(150-5x)=0
We add all the numbers together, and all the variables
10x+12x-(-5x+150)-30=0
We add all the numbers together, and all the variables
22x-(-5x+150)-30=0
We get rid of parentheses
22x+5x-150-30=0
We add all the numbers together, and all the variables
27x-180=0
We move all terms containing x to the left, all other terms to the right
27x=180
x=180/27
x=6+2/3
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