90r-10-45r=170

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Solution for 90r-10-45r=170 equation:


Simplifying
90r + -10 + -45r = 170

Reorder the terms:
-10 + 90r + -45r = 170

Combine like terms: 90r + -45r = 45r
-10 + 45r = 170

Solving
-10 + 45r = 170

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 + 45r = 170 + 10

Combine like terms: -10 + 10 = 0
0 + 45r = 170 + 10
45r = 170 + 10

Combine like terms: 170 + 10 = 180
45r = 180

Divide each side by '45'.
r = 4

Simplifying
r = 4

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