8r-24=-21+7r

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Solution for 8r-24=-21+7r equation:


Simplifying
8r + -24 = -21 + 7r

Reorder the terms:
-24 + 8r = -21 + 7r

Solving
-24 + 8r = -21 + 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.
-24 + 8r + -7r = -21 + 7r + -7r

Combine like terms: 8r + -7r = 1r
-24 + 1r = -21 + 7r + -7r

Combine like terms: 7r + -7r = 0
-24 + 1r = -21 + 0
-24 + 1r = -21

Add '24' to each side of the equation.
-24 + 24 + 1r = -21 + 24

Combine like terms: -24 + 24 = 0
0 + 1r = -21 + 24
1r = -21 + 24

Combine like terms: -21 + 24 = 3
1r = 3

Divide each side by '1'.
r = 3

Simplifying
r = 3

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