70=5(1-r)+5(-3r-3)

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Solution for 70=5(1-r)+5(-3r-3) equation: 


Simplifying
70 = 5(1 + -1r) + 5(-3r + -3)
70 = (1 * 5 + -1r * 5) + 5(-3r + -3)
70 = (5 + -5r) + 5(-3r + -3)

Reorder the terms:
70 = 5 + -5r + 5(-3 + -3r)
70 = 5 + -5r + (-3 * 5 + -3r * 5)
70 = 5 + -5r + (-15 + -15r)

Reorder the terms:
70 = 5 + -15 + -5r + -15r

Combine like terms: 5 + -15 = -10
70 = -10 + -5r + -15r

Combine like terms: -5r + -15r = -20r
70 = -10 + -20r

Solving
70 = -10 + -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.
70 + 20r = -10 + -20r + 20r

Combine like terms: -20r + 20r = 0
70 + 20r = -10 + 0
70 + 20r = -10

Add '-70' to each side of the equation.
70 + -70 + 20r = -10 + -70

Combine like terms: 70 + -70 = 0
0 + 20r = -10 + -70
20r = -10 + -70

Combine like terms: -10 + -70 = -80
20r = -80

Divide each side by '20'.
r = -4

Simplifying
r = -4

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