-7+9r=8r-4

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


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

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

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

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-7 + 9r + -8r = -4 + 8r + -8r

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

Combine like terms: 8r + -8r = 0
-7 + 1r = -4 + 0
-7 + 1r = -4

Add '7' to each side of the equation.
-7 + 7 + 1r = -4 + 7

Combine like terms: -7 + 7 = 0
0 + 1r = -4 + 7
1r = -4 + 7

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

Divide each side by '1'.
r = 3

Simplifying
r = 3

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