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19=2x-(-13)
We move all terms to the left:
19-(2x-(-13))=0
We calculate terms in parentheses: -(2x-(-13)), so:We get rid of parentheses
2x-(-13)
We add all the numbers together, and all the variables
2x+13
Back to the equation:
-(2x+13)
-2x-13+19=0
We add all the numbers together, and all the variables
-2x+6=0
We move all terms containing x to the left, all other terms to the right
-2x=-6
x=-6/-2
x=+3
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