56=-8(3r-5)+8(7+4r)

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Solution for 56=-8(3r-5)+8(7+4r) equation:


Simplifying
56 = -8(3r + -5) + 8(7 + 4r)

Reorder the terms:
56 = -8(-5 + 3r) + 8(7 + 4r)
56 = (-5 * -8 + 3r * -8) + 8(7 + 4r)
56 = (40 + -24r) + 8(7 + 4r)
56 = 40 + -24r + (7 * 8 + 4r * 8)
56 = 40 + -24r + (56 + 32r)

Reorder the terms:
56 = 40 + 56 + -24r + 32r

Combine like terms: 40 + 56 = 96
56 = 96 + -24r + 32r

Combine like terms: -24r + 32r = 8r
56 = 96 + 8r

Solving
56 = 96 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
56 + -8r = 96 + 8r + -8r

Combine like terms: 8r + -8r = 0
56 + -8r = 96 + 0
56 + -8r = 96

Add '-56' to each side of the equation.
56 + -56 + -8r = 96 + -56

Combine like terms: 56 + -56 = 0
0 + -8r = 96 + -56
-8r = 96 + -56

Combine like terms: 96 + -56 = 40
-8r = 40

Divide each side by '-8'.
r = -5

Simplifying
r = -5

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