-20-7r=5(r-4)

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Solution for -20-7r=5(r-4) equation:


Simplifying
-20 + -7r = 5(r + -4)

Reorder the terms:
-20 + -7r = 5(-4 + r)
-20 + -7r = (-4 * 5 + r * 5)
-20 + -7r = (-20 + 5r)

Add '20' to each side of the equation.
-20 + 20 + -7r = -20 + 20 + 5r

Combine like terms: -20 + 20 = 0
0 + -7r = -20 + 20 + 5r
-7r = -20 + 20 + 5r

Combine like terms: -20 + 20 = 0
-7r = 0 + 5r
-7r = 5r

Solving
-7r = 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-7r + -5r = 5r + -5r

Combine like terms: -7r + -5r = -12r
-12r = 5r + -5r

Combine like terms: 5r + -5r = 0
-12r = 0

Divide each side by '-12'.
r = 0

Simplifying
r = 0

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