7x-18=21+4x

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Solution for 7x-18=21+4x equation:


7x-18=21+4x

We simplify the equation to the form, which is simple to understand 
7x-18=21+4x

We move all terms containing x to the left and all other terms to the right. 
+7x-4x=+21+18

We simplify left and right side of the equation. 
+3x=+39

We divide both sides of the equation by 3 to get x. 
x=13

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