-20+6r=4(r-7)

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Solution for -20+6r=4(r-7) equation:


Simplifying
-20 + 6r = 4(r + -7)

Reorder the terms:
-20 + 6r = 4(-7 + r)
-20 + 6r = (-7 * 4 + r * 4)
-20 + 6r = (-28 + 4r)

Solving
-20 + 6r = -28 + 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.
-20 + 6r + -4r = -28 + 4r + -4r

Combine like terms: 6r + -4r = 2r
-20 + 2r = -28 + 4r + -4r

Combine like terms: 4r + -4r = 0
-20 + 2r = -28 + 0
-20 + 2r = -28

Add '20' to each side of the equation.
-20 + 20 + 2r = -28 + 20

Combine like terms: -20 + 20 = 0
0 + 2r = -28 + 20
2r = -28 + 20

Combine like terms: -28 + 20 = -8
2r = -8

Divide each side by '2'.
r = -4

Simplifying
r = -4

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