7+5r=2(1+4r)-4

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Solution for 7+5r=2(1+4r)-4 equation:


7+5r=2(1+4r)-4

We simplify the equation to the form, which is simple to understand 
7+5r=2(1+4r)-4

Reorder the terms in parentheses
7+5r=+(+2+8r)-4

Remove unnecessary parentheses
+7+5r=+2+8r-4

We move all terms containing r to the left and all other terms to the right. 
+5r-8r=+2-4-7

We simplify left and right side of the equation. 
-3r=-9

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

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