7(5r+3)=126

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Solution for 7(5r+3)=126 equation:


7(5r+3)=126

We simplify the equation to the form, which is simple to understand 
7(5r+3)=126

Reorder the terms in parentheses
+(+35r+21)=126

Remove unnecessary parentheses
+35r+21=+126

We move all terms containing r to the left and all other terms to the right. 
+35r=+126-21

We simplify left and right side of the equation. 
+35r=+105

We divide both sides of the equation by 35 to get r. 
r=3

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