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x+2x+(x+4)=100
We simplify the equation to the form, which is simple to understand
x+2x+(x+4)=100
Remove unnecessary parentheses
+x+2x+x+4=+100
We move all terms containing x to the left and all other terms to the right.
+1x+2x+1x=+100-4
We simplify left and right side of the equation.
+4x=+96
We divide both sides of the equation by 4 to get x.
x=24
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