7+3r+2r=12

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Solution for 7+3r+2r=12 equation: 


Simplifying
7 + 3r + 2r = 12

Combine like terms: 3r + 2r = 5r
7 + 5r = 12

Solving
7 + 5r = 12

Solving for variable 'r'.

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

Add '-7' to each side of the equation.
7 + -7 + 5r = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 5r = 12 + -7
5r = 12 + -7

Combine like terms: 12 + -7 = 5
5r = 5

Divide each side by '5'.
r = 1

Simplifying
r = 1

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