42-15=7d-2d+5-2

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Solution for 42-15=7d-2d+5-2 equation:


Simplifying
42 + -15 = 7d + -2d + 5 + -2

Combine like terms: 42 + -15 = 27
27 = 7d + -2d + 5 + -2

Reorder the terms:
27 = 5 + -2 + 7d + -2d

Combine like terms: 5 + -2 = 3
27 = 3 + 7d + -2d

Combine like terms: 7d + -2d = 5d
27 = 3 + 5d

Solving
27 = 3 + 5d

Solving for variable 'd'.

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

Add '-5d' to each side of the equation.
27 + -5d = 3 + 5d + -5d

Combine like terms: 5d + -5d = 0
27 + -5d = 3 + 0
27 + -5d = 3

Add '-27' to each side of the equation.
27 + -27 + -5d = 3 + -27

Combine like terms: 27 + -27 = 0
0 + -5d = 3 + -27
-5d = 3 + -27

Combine like terms: 3 + -27 = -24
-5d = -24

Divide each side by '-5'.
d = 4.8

Simplifying
d = 4.8

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