5r+2=7r-12

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Solution for 5r+2=7r-12 equation:


Simplifying
5r + 2 = 7r + -12

Reorder the terms:
2 + 5r = 7r + -12

Reorder the terms:
2 + 5r = -12 + 7r

Solving
2 + 5r = -12 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
2 + 5r + -7r = -12 + 7r + -7r

Combine like terms: 5r + -7r = -2r
2 + -2r = -12 + 7r + -7r

Combine like terms: 7r + -7r = 0
2 + -2r = -12 + 0
2 + -2r = -12

Add '-2' to each side of the equation.
2 + -2 + -2r = -12 + -2

Combine like terms: 2 + -2 = 0
0 + -2r = -12 + -2
-2r = -12 + -2

Combine like terms: -12 + -2 = -14
-2r = -14

Divide each side by '-2'.
r = 7

Simplifying
r = 7

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