4r-8+7-gr=-9

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Solution for 4r-8+7-gr=-9 equation:


Simplifying
4r + -8 + 7 + -1gr = -9

Reorder the terms:
-8 + 7 + -1gr + 4r = -9

Combine like terms: -8 + 7 = -1
-1 + -1gr + 4r = -9

Solving
-1 + -1gr + 4r = -9

Solving for variable 'g'.

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

Add '1' to each side of the equation.
-1 + -1gr + 1 + 4r = -9 + 1

Reorder the terms:
-1 + 1 + -1gr + 4r = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -1gr + 4r = -9 + 1
-1gr + 4r = -9 + 1

Combine like terms: -9 + 1 = -8
-1gr + 4r = -8

Add '-4r' to each side of the equation.
-1gr + 4r + -4r = -8 + -4r

Combine like terms: 4r + -4r = 0
-1gr + 0 = -8 + -4r
-1gr = -8 + -4r

Divide each side by '-1r'.
g = 8r-1 + 4

Simplifying
g = 8r-1 + 4

Reorder the terms:
g = 4 + 8r-1

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