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(10+19)*10=(13+x)*13
We move all terms to the left:
(10+19)*10-((13+x)*13)=0
We add all the numbers together, and all the variables
-((x+13)*13)+29*10=0
We add all the numbers together, and all the variables
-((x+13)*13)+290=0
We calculate terms in parentheses: -((x+13)*13), so:We get rid of parentheses
(x+13)*13
We multiply parentheses
13x+169
Back to the equation:
-(13x+169)
-13x-169+290=0
We add all the numbers together, and all the variables
-13x+121=0
We move all terms containing x to the left, all other terms to the right
-13x=-121
x=-121/-13
x=9+4/13
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