3(-40+-2r)+20=

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Solution for 3(-40+-2r)+20= equation:


Simplifying
3(-40 + -2r) + 20 = 0
(-40 * 3 + -2r * 3) + 20 = 0
(-120 + -6r) + 20 = 0

Reorder the terms:
-120 + 20 + -6r = 0

Combine like terms: -120 + 20 = -100
-100 + -6r = 0

Solving
-100 + -6r = 0

Solving for variable 'r'.

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

Add '100' to each side of the equation.
-100 + 100 + -6r = 0 + 100

Combine like terms: -100 + 100 = 0
0 + -6r = 0 + 100
-6r = 0 + 100

Combine like terms: 0 + 100 = 100
-6r = 100

Divide each side by '-6'.
r = -16.66666667

Simplifying
r = -16.66666667

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