-5+5(3-7d)+5d=-20

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Solution for -5+5(3-7d)+5d=-20 equation: 


Simplifying
-5 + 5(3 + -7d) + 5d = -20
-5 + (3 * 5 + -7d * 5) + 5d = -20
-5 + (15 + -35d) + 5d = -20

Combine like terms: -5 + 15 = 10
10 + -35d + 5d = -20

Combine like terms: -35d + 5d = -30d
10 + -30d = -20

Solving
10 + -30d = -20

Solving for variable 'd'.

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

Add '-10' to each side of the equation.
10 + -10 + -30d = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -30d = -20 + -10
-30d = -20 + -10

Combine like terms: -20 + -10 = -30
-30d = -30

Divide each side by '-30'.
d = 1

Simplifying
d = 1

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