3r-23=-15+r

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Solution for 3r-23=-15+r equation:


Simplifying
3r + -23 = -15 + r

Reorder the terms:
-23 + 3r = -15 + r

Solving
-23 + 3r = -15 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-23 + 3r + -1r = -15 + r + -1r

Combine like terms: 3r + -1r = 2r
-23 + 2r = -15 + r + -1r

Combine like terms: r + -1r = 0
-23 + 2r = -15 + 0
-23 + 2r = -15

Add '23' to each side of the equation.
-23 + 23 + 2r = -15 + 23

Combine like terms: -23 + 23 = 0
0 + 2r = -15 + 23
2r = -15 + 23

Combine like terms: -15 + 23 = 8
2r = 8

Divide each side by '2'.
r = 4

Simplifying
r = 4

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