x+2x+(x-3)=81

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Solution for x+2x+(x-3)=81 equation:


x+2x+(x-3)=81

We simplify the equation to the form, which is simple to understand
x+2x+(x-3)=81

Remove unnecessary parentheses
+x+2x+x-3=+81

We move all terms containing x to the left and all other terms to the right.
+1x+2x+1x=+81+3

We simplify left and right side of the equation.
+4x=+84

We divide both sides of the equation by 4 to get x.
x=21

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