3(d-15)=9-4d

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Solution for 3(d-15)=9-4d equation:


Simplifying
3(d + -15) = 9 + -4d

Reorder the terms:
3(-15 + d) = 9 + -4d
(-15 * 3 + d * 3) = 9 + -4d
(-45 + 3d) = 9 + -4d

Solving
-45 + 3d = 9 + -4d

Solving for variable 'd'.

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

Add '4d' to each side of the equation.
-45 + 3d + 4d = 9 + -4d + 4d

Combine like terms: 3d + 4d = 7d
-45 + 7d = 9 + -4d + 4d

Combine like terms: -4d + 4d = 0
-45 + 7d = 9 + 0
-45 + 7d = 9

Add '45' to each side of the equation.
-45 + 45 + 7d = 9 + 45

Combine like terms: -45 + 45 = 0
0 + 7d = 9 + 45
7d = 9 + 45

Combine like terms: 9 + 45 = 54
7d = 54

Divide each side by '7'.
d = 7.714285714

Simplifying
d = 7.714285714

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