3r+12=8r+210

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Solution for 3r+12=8r+210 equation:


Simplifying
3r + 12 = 8r + 210

Reorder the terms:
12 + 3r = 8r + 210

Reorder the terms:
12 + 3r = 210 + 8r

Solving
12 + 3r = 210 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
12 + 3r + -8r = 210 + 8r + -8r

Combine like terms: 3r + -8r = -5r
12 + -5r = 210 + 8r + -8r

Combine like terms: 8r + -8r = 0
12 + -5r = 210 + 0
12 + -5r = 210

Add '-12' to each side of the equation.
12 + -12 + -5r = 210 + -12

Combine like terms: 12 + -12 = 0
0 + -5r = 210 + -12
-5r = 210 + -12

Combine like terms: 210 + -12 = 198
-5r = 198

Divide each side by '-5'.
r = -39.6

Simplifying
r = -39.6

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