-64=-4r-4(4r+1)

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Solution for -64=-4r-4(4r+1) equation:


Simplifying
-64 = -4r + -4(4r + 1)

Reorder the terms:
-64 = -4r + -4(1 + 4r)
-64 = -4r + (1 * -4 + 4r * -4)
-64 = -4r + (-4 + -16r)

Reorder the terms:
-64 = -4 + -4r + -16r

Combine like terms: -4r + -16r = -20r
-64 = -4 + -20r

Solving
-64 = -4 + -20r

Solving for variable 'r'.

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

Add '20r' to each side of the equation.
-64 + 20r = -4 + -20r + 20r

Combine like terms: -20r + 20r = 0
-64 + 20r = -4 + 0
-64 + 20r = -4

Add '64' to each side of the equation.
-64 + 64 + 20r = -4 + 64

Combine like terms: -64 + 64 = 0
0 + 20r = -4 + 64
20r = -4 + 64

Combine like terms: -4 + 64 = 60
20r = 60

Divide each side by '20'.
r = 3

Simplifying
r = 3

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