-4r+9=12r-7

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Solution for -4r+9=12r-7 equation:


Simplifying
-4r + 9 = 12r + -7

Reorder the terms:
9 + -4r = 12r + -7

Reorder the terms:
9 + -4r = -7 + 12r

Solving
9 + -4r = -7 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
9 + -4r + -12r = -7 + 12r + -12r

Combine like terms: -4r + -12r = -16r
9 + -16r = -7 + 12r + -12r

Combine like terms: 12r + -12r = 0
9 + -16r = -7 + 0
9 + -16r = -7

Add '-9' to each side of the equation.
9 + -9 + -16r = -7 + -9

Combine like terms: 9 + -9 = 0
0 + -16r = -7 + -9
-16r = -7 + -9

Combine like terms: -7 + -9 = -16
-16r = -16

Divide each side by '-16'.
r = 1

Simplifying
r = 1

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