3r-2r+7=9

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Solution for 3r-2r+7=9 equation: 


Simplifying
3r + -2r + 7 = 9

Reorder the terms:
7 + 3r + -2r = 9

Combine like terms: 3r + -2r = 1r
7 + 1r = 9

Solving
7 + 1r = 9

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 + 1r = 9 + -7

Combine like terms: 7 + -7 = 0
0 + 1r = 9 + -7
1r = 9 + -7

Combine like terms: 9 + -7 = 2
1r = 2

Divide each side by '1'.
r = 2

Simplifying
r = 2

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