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x+(13+x)+(-15+4*x)=658
We simplify the equation to the form, which is simple to understand
x+(13+x)+(-15+4*x)=658
Simplifying:
x+(13+x)+(-15+4x)=658
Remove unnecessary parentheses
+x+13+x+(-15+4x+)=+658
Remove unnecessary parentheses
+x+13+x-15+4x=+658
We move all terms containing x to the left and all other terms to the right.
+1x+1x+4x=+658-13+15
We simplify left and right side of the equation.
+6x=+660
We divide both sides of the equation by 6 to get x.
x=110
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