119=10r+9

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Solution for 119=10r+9 equation:


Simplifying
119 = 10r + 9

Reorder the terms:
119 = 9 + 10r

Solving
119 = 9 + 10r

Solving for variable 'r'.

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

Add '-10r' to each side of the equation.
119 + -10r = 9 + 10r + -10r

Combine like terms: 10r + -10r = 0
119 + -10r = 9 + 0
119 + -10r = 9

Add '-119' to each side of the equation.
119 + -119 + -10r = 9 + -119

Combine like terms: 119 + -119 = 0
0 + -10r = 9 + -119
-10r = 9 + -119

Combine like terms: 9 + -119 = -110
-10r = -110

Divide each side by '-10'.
r = 11

Simplifying
r = 11

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