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4X+7X+19=3*12-4+(5*16)-5*5X
We move all terms to the left:
4X+7X+19-(3*12-4+(5*16)-5*5X)=0
We add all the numbers together, and all the variables
4X+7X-(3*12-4+80-5*5X)+19=0
We add all the numbers together, and all the variables
11X-(3*12-4+80-5*5X)+19=0
We get rid of parentheses
11X+5*5X+4-80+19-3*12=0
We add all the numbers together, and all the variables
11X+5*5X-93=0
Wy multiply elements
11X+25X-93=0
We add all the numbers together, and all the variables
36X-93=0
We move all terms containing X to the left, all other terms to the right
36X=93
X=93/36
X=2+7/12
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