3(d-5)+4d=40

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Solution for 3(d-5)+4d=40 equation:


Simplifying
3(d + -5) + 4d = 40

Reorder the terms:
3(-5 + d) + 4d = 40
(-5 * 3 + d * 3) + 4d = 40
(-15 + 3d) + 4d = 40

Combine like terms: 3d + 4d = 7d
-15 + 7d = 40

Solving
-15 + 7d = 40

Solving for variable 'd'.

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

Add '15' to each side of the equation.
-15 + 15 + 7d = 40 + 15

Combine like terms: -15 + 15 = 0
0 + 7d = 40 + 15
7d = 40 + 15

Combine like terms: 40 + 15 = 55
7d = 55

Divide each side by '7'.
d = 7.857142857

Simplifying
d = 7.857142857

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