4r+7-8-6r=-9

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Solution for 4r+7-8-6r=-9 equation:


Simplifying
4r + 7 + -8 + -6r = -9

Reorder the terms:
7 + -8 + 4r + -6r = -9

Combine like terms: 7 + -8 = -1
-1 + 4r + -6r = -9

Combine like terms: 4r + -6r = -2r
-1 + -2r = -9

Solving
-1 + -2r = -9

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + -2r = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -2r = -9 + 1
-2r = -9 + 1

Combine like terms: -9 + 1 = -8
-2r = -8

Divide each side by '-2'.
r = 4

Simplifying
r = 4

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