-7(5-r)=28

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Solution for -7(5-r)=28 equation: 


Simplifying
-7(5 + -1r) = 28
(5 * -7 + -1r * -7) = 28
(-35 + 7r) = 28

Solving
-35 + 7r = 28

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '35' to each side of the equation.
-35 + 35 + 7r = 28 + 35

Combine like terms: -35 + 35 = 0
0 + 7r = 28 + 35
7r = 28 + 35

Combine like terms: 28 + 35 = 63
7r = 63

Divide each side by '7'.
r = 9

Simplifying
r = 9

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