9(-15r+19)=20+16r

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Solution for 9(-15r+19)=20+16r equation:


Simplifying
9(-15r + 19) = 20 + 16r

Reorder the terms:
9(19 + -15r) = 20 + 16r
(19 * 9 + -15r * 9) = 20 + 16r
(171 + -135r) = 20 + 16r

Solving
171 + -135r = 20 + 16r

Solving for variable 'r'.

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

Add '-16r' to each side of the equation.
171 + -135r + -16r = 20 + 16r + -16r

Combine like terms: -135r + -16r = -151r
171 + -151r = 20 + 16r + -16r

Combine like terms: 16r + -16r = 0
171 + -151r = 20 + 0
171 + -151r = 20

Add '-171' to each side of the equation.
171 + -171 + -151r = 20 + -171

Combine like terms: 171 + -171 = 0
0 + -151r = 20 + -171
-151r = 20 + -171

Combine like terms: 20 + -171 = -151
-151r = -151

Divide each side by '-151'.
r = 1

Simplifying
r = 1

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