3(7-8r)=3(8-7r)

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Solution for 3(7-8r)=3(8-7r) equation:


Simplifying
3(7 + -8r) = 3(8 + -7r)
(7 * 3 + -8r * 3) = 3(8 + -7r)
(21 + -24r) = 3(8 + -7r)
21 + -24r = (8 * 3 + -7r * 3)
21 + -24r = (24 + -21r)

Solving
21 + -24r = 24 + -21r

Solving for variable 'r'.

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

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

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

Combine like terms: -21r + 21r = 0
21 + -3r = 24 + 0
21 + -3r = 24

Add '-21' to each side of the equation.
21 + -21 + -3r = 24 + -21

Combine like terms: 21 + -21 = 0
0 + -3r = 24 + -21
-3r = 24 + -21

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

Divide each side by '-3'.
r = -1

Simplifying
r = -1

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