57=12+15d

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Solution for 57=12+15d equation:


Simplifying
57 = 12 + 15d

Solving
57 = 12 + 15d

Solving for variable 'd'.

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

Add '-15d' to each side of the equation.
57 + -15d = 12 + 15d + -15d

Combine like terms: 15d + -15d = 0
57 + -15d = 12 + 0
57 + -15d = 12

Add '-57' to each side of the equation.
57 + -57 + -15d = 12 + -57

Combine like terms: 57 + -57 = 0
0 + -15d = 12 + -57
-15d = 12 + -57

Combine like terms: 12 + -57 = -45
-15d = -45

Divide each side by '-15'.
d = 3

Simplifying
d = 3

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