5r-10=90

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Solution for 5r-10=90 equation: 


Simplifying
5r + -10 = 90

Reorder the terms:
-10 + 5r = 90

Solving
-10 + 5r = 90

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 + 5r = 90 + 10

Combine like terms: -10 + 10 = 0
0 + 5r = 90 + 10
5r = 90 + 10

Combine like terms: 90 + 10 = 100
5r = 100

Divide each side by '5'.
r = 20

Simplifying
r = 20

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