3r+20r-(-12)=-11

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Solution for 3r+20r-(-12)=-11 equation:


Simplifying
3r + 20r + -1(-12) = -11

Multiply -1 * -12
3r + 20r + 12 = -11

Reorder the terms:
12 + 3r + 20r = -11

Combine like terms: 3r + 20r = 23r
12 + 23r = -11

Solving
12 + 23r = -11

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + 23r = -11 + -12

Combine like terms: 12 + -12 = 0
0 + 23r = -11 + -12
23r = -11 + -12

Combine like terms: -11 + -12 = -23
23r = -23

Divide each side by '23'.
r = -1

Simplifying
r = -1

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