7.2-4[d-3]=23

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Solution for 7.2-4[d-3]=23 equation: 


Simplifying
7.2 + -4[d + -3] = 23

Reorder the terms:
7.2 + -4[-3 + d] = 23
7.2 + [-3 * -4 + d * -4] = 23
7.2 + [12 + -4d] = 23

Combine like terms: 7.2 + 12 = 19.2
19.2 + -4d = 23

Solving
19.2 + -4d = 23

Solving for variable 'd'.

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

Add '-19.2' to each side of the equation.
19.2 + -19.2 + -4d = 23 + -19.2

Combine like terms: 19.2 + -19.2 = 0.0
0.0 + -4d = 23 + -19.2
-4d = 23 + -19.2

Combine like terms: 23 + -19.2 = 3.8
-4d = 3.8

Divide each side by '-4'.
d = -0.95

Simplifying
d = -0.95

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