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126=3x+2x-1+3x+2x-1
We move all terms to the left:
126-(3x+2x-1+3x+2x-1)=0
We add all the numbers together, and all the variables
-(10x-2)+126=0
We get rid of parentheses
-10x+2+126=0
We add all the numbers together, and all the variables
-10x+128=0
We move all terms containing x to the left, all other terms to the right
-10x=-128
x=-128/-10
x=12+4/5
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