-6(r-2)+2(r+4)=40

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Solution for -6(r-2)+2(r+4)=40 equation:


Simplifying
-6(r + -2) + 2(r + 4) = 40

Reorder the terms:
-6(-2 + r) + 2(r + 4) = 40
(-2 * -6 + r * -6) + 2(r + 4) = 40
(12 + -6r) + 2(r + 4) = 40

Reorder the terms:
12 + -6r + 2(4 + r) = 40
12 + -6r + (4 * 2 + r * 2) = 40
12 + -6r + (8 + 2r) = 40

Reorder the terms:
12 + 8 + -6r + 2r = 40

Combine like terms: 12 + 8 = 20
20 + -6r + 2r = 40

Combine like terms: -6r + 2r = -4r
20 + -4r = 40

Solving
20 + -4r = 40

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + -4r = 40 + -20

Combine like terms: 20 + -20 = 0
0 + -4r = 40 + -20
-4r = 40 + -20

Combine like terms: 40 + -20 = 20
-4r = 20

Divide each side by '-4'.
r = -5

Simplifying
r = -5

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