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6x+13x=76.
We move all terms to the left:
6x+13x-(76.)=0
We add all the numbers together, and all the variables
6x+13x-76=0
We add all the numbers together, and all the variables
19x-76=0
We move all terms containing x to the left, all other terms to the right
19x=76
x=76/19
x=4
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