9r+10+2-3r=

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Solution for 9r+10+2-3r= equation:


Simplifying
9r + 10 + 2 + -3r = 0

Reorder the terms:
10 + 2 + 9r + -3r = 0

Combine like terms: 10 + 2 = 12
12 + 9r + -3r = 0

Combine like terms: 9r + -3r = 6r
12 + 6r = 0

Solving
12 + 6r = 0

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + 6r = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 6r = 0 + -12
6r = 0 + -12

Combine like terms: 0 + -12 = -12
6r = -12

Divide each side by '6'.
r = -2

Simplifying
r = -2

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