2(r-7)=-20-4r

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Solution for 2(r-7)=-20-4r equation:


Simplifying
2(r + -7) = -20 + -4r

Reorder the terms:
2(-7 + r) = -20 + -4r
(-7 * 2 + r * 2) = -20 + -4r
(-14 + 2r) = -20 + -4r

Solving
-14 + 2r = -20 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-14 + 2r + 4r = -20 + -4r + 4r

Combine like terms: 2r + 4r = 6r
-14 + 6r = -20 + -4r + 4r

Combine like terms: -4r + 4r = 0
-14 + 6r = -20 + 0
-14 + 6r = -20

Add '14' to each side of the equation.
-14 + 14 + 6r = -20 + 14

Combine like terms: -14 + 14 = 0
0 + 6r = -20 + 14
6r = -20 + 14

Combine like terms: -20 + 14 = -6
6r = -6

Divide each side by '6'.
r = -1

Simplifying
r = -1

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