.2(10d+30)=13

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Solution for .2(10d+30)=13 equation: 


Simplifying
0.2(10d + 30) = 13

Reorder the terms:
0.2(30 + 10d) = 13
(30 * 0.2 + 10d * 0.2) = 13
(6 + 2d) = 13

Solving
6 + 2d = 13

Solving for variable 'd'.

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

Add '-6' to each side of the equation.
6 + -6 + 2d = 13 + -6

Combine like terms: 6 + -6 = 0
0 + 2d = 13 + -6
2d = 13 + -6

Combine like terms: 13 + -6 = 7
2d = 7

Divide each side by '2'.
d = 3.5

Simplifying
d = 3.5

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