3(7+x)=42

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Solution for 3(7+x)=42 equation:


3(7+x)=42

We simplify the equation to the form, which is simple to understand 
3(7+x)=42

Reorder the terms in parentheses
+(+21+3x)=42

Remove unnecessary parentheses
+21+3x=+42

We move all terms containing x to the left and all other terms to the right. 
+3x=+42-21

We simplify left and right side of the equation. 
+3x=+21

We divide both sides of the equation by 3 to get x. 
x=7

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