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140=19x-8
We move all terms to the left:
140-(19x-8)=0
We get rid of parentheses
-19x+8+140=0
We add all the numbers together, and all the variables
-19x+148=0
We move all terms containing x to the left, all other terms to the right
-19x=-148
x=-148/-19
x=7+15/19
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