7r-27=15+r

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Solution for 7r-27=15+r equation:


Simplifying
7r + -27 = 15 + r

Reorder the terms:
-27 + 7r = 15 + r

Solving
-27 + 7r = 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.
-27 + 7r + -1r = 15 + r + -1r

Combine like terms: 7r + -1r = 6r
-27 + 6r = 15 + r + -1r

Combine like terms: r + -1r = 0
-27 + 6r = 15 + 0
-27 + 6r = 15

Add '27' to each side of the equation.
-27 + 27 + 6r = 15 + 27

Combine like terms: -27 + 27 = 0
0 + 6r = 15 + 27
6r = 15 + 27

Combine like terms: 15 + 27 = 42
6r = 42

Divide each side by '6'.
r = 7

Simplifying
r = 7

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