10r-2=20

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Solution for 10r-2=20 equation: 


Simplifying
10r + -2 = 20

Reorder the terms:
-2 + 10r = 20

Solving
-2 + 10r = 20

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 10r = 20 + 2

Combine like terms: -2 + 2 = 0
0 + 10r = 20 + 2
10r = 20 + 2

Combine like terms: 20 + 2 = 22
10r = 22

Divide each side by '10'.
r = 2.2

Simplifying
r = 2.2

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