3r+10+2r-20=180

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Solution for 3r+10+2r-20=180 equation:


Simplifying
3r + 10 + 2r + -20 = 180

Reorder the terms:
10 + -20 + 3r + 2r = 180

Combine like terms: 10 + -20 = -10
-10 + 3r + 2r = 180

Combine like terms: 3r + 2r = 5r
-10 + 5r = 180

Solving
-10 + 5r = 180

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 = 180 + 10

Combine like terms: -10 + 10 = 0
0 + 5r = 180 + 10
5r = 180 + 10

Combine like terms: 180 + 10 = 190
5r = 190

Divide each side by '5'.
r = 38

Simplifying
r = 38

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