3r+10-2r-3=12

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Solution for 3r+10-2r-3=12 equation:


Simplifying
3r + 10 + -2r + -3 = 12

Reorder the terms:
10 + -3 + 3r + -2r = 12

Combine like terms: 10 + -3 = 7
7 + 3r + -2r = 12

Combine like terms: 3r + -2r = 1r
7 + 1r = 12

Solving
7 + 1r = 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 + 1r = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 1r = 12 + -7
1r = 12 + -7

Combine like terms: 12 + -7 = 5
1r = 5

Divide each side by '1'.
r = 5

Simplifying
r = 5

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