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(2x+45)+x=190
We move all terms to the left:
(2x+45)+x-(190)=0
We add all the numbers together, and all the variables
x+(2x+45)-190=0
We get rid of parentheses
x+2x+45-190=0
We add all the numbers together, and all the variables
3x-145=0
We move all terms containing x to the left, all other terms to the right
3x=145
x=145/3
x=48+1/3
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