5(15+d)=90

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Solution for 5(15+d)=90 equation: 


Simplifying
5(15 + d) = 90
(15 * 5 + d * 5) = 90
(75 + 5d) = 90

Solving
75 + 5d = 90

Solving for variable 'd'.

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

Add '-75' to each side of the equation.
75 + -75 + 5d = 90 + -75

Combine like terms: 75 + -75 = 0
0 + 5d = 90 + -75
5d = 90 + -75

Combine like terms: 90 + -75 = 15
5d = 15

Divide each side by '5'.
d = 3

Simplifying
d = 3

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