7r+3(7-r)=-1(r+4)

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Solution for 7r+3(7-r)=-1(r+4) equation:


7r+3(7-r)=-1(r+4)

We simplify the equation to the form, which is simple to understand 
7r+3(7-r)=-1(r+4)

Reorder the terms in parentheses
7r+(+21-3r)=-1*(r+4)

Remove unnecessary parentheses
+7r+21-3r=-1+*(+r+4+)

Reorder the terms in parentheses
7r+21-3r=+(-1r-4)

Remove unnecessary parentheses
+7r+21-3r=-1r-4

We move all terms containing r to the left and all other terms to the right. 
+7r-3r+1r=-4-21

We simplify left and right side of the equation. 
+5r=-25

We divide both sides of the equation by 5 to get r. 
r=-5

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