(d-3).4=30

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Solution for (d-3).4=30 equation:


Simplifying
(d + -3) * 0.4 = 30

Reorder the terms:
(-3 + d) * 0.4 = 30

Reorder the terms for easier multiplication:
0.4(-3 + d) = 30
(-3 * 0.4 + d * 0.4) = 30
(-1.2 + 0.4d) = 30

Solving
-1.2 + 0.4d = 30

Solving for variable 'd'.

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

Add '1.2' to each side of the equation.
-1.2 + 1.2 + 0.4d = 30 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 0.4d = 30 + 1.2
0.4d = 30 + 1.2

Combine like terms: 30 + 1.2 = 31.2
0.4d = 31.2

Divide each side by '0.4'.
d = 78

Simplifying
d = 78

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