8r+3=5r+12

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Solution for 8r+3=5r+12 equation:


Simplifying
8r + 3 = 5r + 12

Reorder the terms:
3 + 8r = 5r + 12

Reorder the terms:
3 + 8r = 12 + 5r

Solving
3 + 8r = 12 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
3 + 8r + -5r = 12 + 5r + -5r

Combine like terms: 8r + -5r = 3r
3 + 3r = 12 + 5r + -5r

Combine like terms: 5r + -5r = 0
3 + 3r = 12 + 0
3 + 3r = 12

Add '-3' to each side of the equation.
3 + -3 + 3r = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 3r = 12 + -3
3r = 12 + -3

Combine like terms: 12 + -3 = 9
3r = 9

Divide each side by '3'.
r = 3

Simplifying
r = 3

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