7r-1+9r+8=

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Solution for 7r-1+9r+8= equation:


Simplifying
7r + -1 + 9r + 8 = 0

Reorder the terms:
-1 + 8 + 7r + 9r = 0

Combine like terms: -1 + 8 = 7
7 + 7r + 9r = 0

Combine like terms: 7r + 9r = 16r
7 + 16r = 0

Solving
7 + 16r = 0

Solving for variable 'r'.

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

Add '-7' to each side of the equation.
7 + -7 + 16r = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 16r = 0 + -7
16r = 0 + -7

Combine like terms: 0 + -7 = -7
16r = -7

Divide each side by '16'.
r = -0.4375

Simplifying
r = -0.4375

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