2(r)-7=r+15

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Solution for 2(r)-7=r+15 equation:


Simplifying
2(r) + -7 = r + 15

Reorder the terms:
-7 + 2r = r + 15

Reorder the terms:
-7 + 2r = 15 + r

Solving
-7 + 2r = 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.
-7 + 2r + -1r = 15 + r + -1r

Combine like terms: 2r + -1r = 1r
-7 + 1r = 15 + r + -1r

Combine like terms: r + -1r = 0
-7 + 1r = 15 + 0
-7 + 1r = 15

Add '7' to each side of the equation.
-7 + 7 + 1r = 15 + 7

Combine like terms: -7 + 7 = 0
0 + 1r = 15 + 7
1r = 15 + 7

Combine like terms: 15 + 7 = 22
1r = 22

Divide each side by '1'.
r = 22

Simplifying
r = 22

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