7+2r-r=-7+3r

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


Simplifying
7 + 2r + -1r = -7 + 3r

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

Solving
7 + 1r = -7 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
7 + 1r + -3r = -7 + 3r + -3r

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

Combine like terms: 3r + -3r = 0
7 + -2r = -7 + 0
7 + -2r = -7

Add '-7' to each side of the equation.
7 + -7 + -2r = -7 + -7

Combine like terms: 7 + -7 = 0
0 + -2r = -7 + -7
-2r = -7 + -7

Combine like terms: -7 + -7 = -14
-2r = -14

Divide each side by '-2'.
r = 7

Simplifying
r = 7

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