5(20+d)=420

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Solution for 5(20+d)=420 equation: 


Simplifying
5(20 + d) = 420
(20 * 5 + d * 5) = 420
(100 + 5d) = 420

Solving
100 + 5d = 420

Solving for variable 'd'.

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

Add '-100' to each side of the equation.
100 + -100 + 5d = 420 + -100

Combine like terms: 100 + -100 = 0
0 + 5d = 420 + -100
5d = 420 + -100

Combine like terms: 420 + -100 = 320
5d = 320

Divide each side by '5'.
d = 64

Simplifying
d = 64

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