-7(2-r)=42

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Solution for -7(2-r)=42 equation: 


Simplifying
-7(2 + -1r) = 42
(2 * -7 + -1r * -7) = 42
(-14 + 7r) = 42

Solving
-14 + 7r = 42

Solving for variable 'r'.

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

Add '14' to each side of the equation.
-14 + 14 + 7r = 42 + 14

Combine like terms: -14 + 14 = 0
0 + 7r = 42 + 14
7r = 42 + 14

Combine like terms: 42 + 14 = 56
7r = 56

Divide each side by '7'.
r = 8

Simplifying
r = 8

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