-4(1+4)=-8-4(6r+7)

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Solution for -4(1+4)=-8-4(6r+7) equation: 


Simplifying
-4(1 + 4) = -8 + -4(6r + 7)

Combine like terms: 1 + 4 = 5
-4(5) = -8 + -4(6r + 7)

Multiply -4 * 5
-20 = -8 + -4(6r + 7)

Reorder the terms:
-20 = -8 + -4(7 + 6r)
-20 = -8 + (7 * -4 + 6r * -4)
-20 = -8 + (-28 + -24r)

Combine like terms: -8 + -28 = -36
-20 = -36 + -24r

Solving
-20 = -36 + -24r

Solving for variable 'r'.

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

Add '24r' to each side of the equation.
-20 + 24r = -36 + -24r + 24r

Combine like terms: -24r + 24r = 0
-20 + 24r = -36 + 0
-20 + 24r = -36

Add '20' to each side of the equation.
-20 + 20 + 24r = -36 + 20

Combine like terms: -20 + 20 = 0
0 + 24r = -36 + 20
24r = -36 + 20

Combine like terms: -36 + 20 = -16
24r = -16

Divide each side by '24'.
r = -0.6666666667

Simplifying
r = -0.6666666667

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