48r-39=51r-90

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Solution for 48r-39=51r-90 equation:


Simplifying
48r + -39 = 51r + -90

Reorder the terms:
-39 + 48r = 51r + -90

Reorder the terms:
-39 + 48r = -90 + 51r

Solving
-39 + 48r = -90 + 51r

Solving for variable 'r'.

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

Add '-51r' to each side of the equation.
-39 + 48r + -51r = -90 + 51r + -51r

Combine like terms: 48r + -51r = -3r
-39 + -3r = -90 + 51r + -51r

Combine like terms: 51r + -51r = 0
-39 + -3r = -90 + 0
-39 + -3r = -90

Add '39' to each side of the equation.
-39 + 39 + -3r = -90 + 39

Combine like terms: -39 + 39 = 0
0 + -3r = -90 + 39
-3r = -90 + 39

Combine like terms: -90 + 39 = -51
-3r = -51

Divide each side by '-3'.
r = 17

Simplifying
r = 17

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