9r-16+11r+42=

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Solution for 9r-16+11r+42= equation:


Simplifying
9r + -16 + 11r + 42 = 0

Reorder the terms:
-16 + 42 + 9r + 11r = 0

Combine like terms: -16 + 42 = 26
26 + 9r + 11r = 0

Combine like terms: 9r + 11r = 20r
26 + 20r = 0

Solving
26 + 20r = 0

Solving for variable 'r'.

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

Add '-26' to each side of the equation.
26 + -26 + 20r = 0 + -26

Combine like terms: 26 + -26 = 0
0 + 20r = 0 + -26
20r = 0 + -26

Combine like terms: 0 + -26 = -26
20r = -26

Divide each side by '20'.
r = -1.3

Simplifying
r = -1.3

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