10-9r=55

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Solution for 10-9r=55 equation: 


Simplifying
10 + -9r = 55

Solving
10 + -9r = 55

Solving for variable 'r'.

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

Add '-10' to each side of the equation.
10 + -10 + -9r = 55 + -10

Combine like terms: 10 + -10 = 0
0 + -9r = 55 + -10
-9r = 55 + -10

Combine like terms: 55 + -10 = 45
-9r = 45

Divide each side by '-9'.
r = -5

Simplifying
r = -5

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