15=d+5.25+7.5

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Solution for 15=d+5.25+7.5 equation:


Simplifying
15 = d + 5.25 + 7.5

Reorder the terms:
15 = 5.25 + 7.5 + d

Combine like terms: 5.25 + 7.5 = 12.75
15 = 12.75 + d

Solving
15 = 12.75 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
15 + -1d = 12.75 + d + -1d

Combine like terms: d + -1d = 0
15 + -1d = 12.75 + 0
15 + -1d = 12.75

Add '-15' to each side of the equation.
15 + -15 + -1d = 12.75 + -15

Combine like terms: 15 + -15 = 0
0 + -1d = 12.75 + -15
-1d = 12.75 + -15

Combine like terms: 12.75 + -15 = -2.25
-1d = -2.25

Divide each side by '-1'.
d = 2.25

Simplifying
d = 2.25

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