5r-15=7r+31

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Solution for 5r-15=7r+31 equation:


Simplifying
5r + -15 = 7r + 31

Reorder the terms:
-15 + 5r = 7r + 31

Reorder the terms:
-15 + 5r = 31 + 7r

Solving
-15 + 5r = 31 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-15 + 5r + -7r = 31 + 7r + -7r

Combine like terms: 5r + -7r = -2r
-15 + -2r = 31 + 7r + -7r

Combine like terms: 7r + -7r = 0
-15 + -2r = 31 + 0
-15 + -2r = 31

Add '15' to each side of the equation.
-15 + 15 + -2r = 31 + 15

Combine like terms: -15 + 15 = 0
0 + -2r = 31 + 15
-2r = 31 + 15

Combine like terms: 31 + 15 = 46
-2r = 46

Divide each side by '-2'.
r = -23

Simplifying
r = -23

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