4+18r-3=9r+129-7r

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Solution for 4+18r-3=9r+129-7r equation:


Simplifying
4 + 18r + -3 = 9r + 129 + -7r

Reorder the terms:
4 + -3 + 18r = 9r + 129 + -7r

Combine like terms: 4 + -3 = 1
1 + 18r = 9r + 129 + -7r

Reorder the terms:
1 + 18r = 129 + 9r + -7r

Combine like terms: 9r + -7r = 2r
1 + 18r = 129 + 2r

Solving
1 + 18r = 129 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
1 + 18r + -2r = 129 + 2r + -2r

Combine like terms: 18r + -2r = 16r
1 + 16r = 129 + 2r + -2r

Combine like terms: 2r + -2r = 0
1 + 16r = 129 + 0
1 + 16r = 129

Add '-1' to each side of the equation.
1 + -1 + 16r = 129 + -1

Combine like terms: 1 + -1 = 0
0 + 16r = 129 + -1
16r = 129 + -1

Combine like terms: 129 + -1 = 128
16r = 128

Divide each side by '16'.
r = 8

Simplifying
r = 8

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