-3r-8=-4r+8-7

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Solution for -3r-8=-4r+8-7 equation:


Simplifying
-3r + -8 = -4r + 8 + -7

Reorder the terms:
-8 + -3r = -4r + 8 + -7

Reorder the terms:
-8 + -3r = 8 + -7 + -4r

Combine like terms: 8 + -7 = 1
-8 + -3r = 1 + -4r

Solving
-8 + -3r = 1 + -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.
-8 + -3r + 4r = 1 + -4r + 4r

Combine like terms: -3r + 4r = 1r
-8 + 1r = 1 + -4r + 4r

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

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

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

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

Divide each side by '1'.
r = 9

Simplifying
r = 9

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