3r-5r+7+r=

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Solution for 3r-5r+7+r= equation:


Simplifying
3r + -5r + 7 + r = 0

Reorder the terms:
7 + 3r + -5r + r = 0

Combine like terms: 3r + -5r = -2r
7 + -2r + r = 0

Combine like terms: -2r + r = -1r
7 + -1r = 0

Solving
7 + -1r = 0

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 = 0 + -7

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

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

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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