12(r)-25=4r+7

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Solution for 12(r)-25=4r+7 equation:


Simplifying
12(r) + -25 = 4r + 7

Reorder the terms:
-25 + 12r = 4r + 7

Reorder the terms:
-25 + 12r = 7 + 4r

Solving
-25 + 12r = 7 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
-25 + 12r + -4r = 7 + 4r + -4r

Combine like terms: 12r + -4r = 8r
-25 + 8r = 7 + 4r + -4r

Combine like terms: 4r + -4r = 0
-25 + 8r = 7 + 0
-25 + 8r = 7

Add '25' to each side of the equation.
-25 + 25 + 8r = 7 + 25

Combine like terms: -25 + 25 = 0
0 + 8r = 7 + 25
8r = 7 + 25

Combine like terms: 7 + 25 = 32
8r = 32

Divide each side by '8'.
r = 4

Simplifying
r = 4

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