(7+5)-r=5

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


Simplifying
(7 + 5) + -1r = 5

Combine like terms: 7 + 5 = 12
(12) + -1r = 5
12 + -1r = 5

Solving
12 + -1r = 5

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + -1r = 5 + -12

Combine like terms: 12 + -12 = 0
0 + -1r = 5 + -12
-1r = 5 + -12

Combine like terms: 5 + -12 = -7
-1r = -7

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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