3d-12(d-9)-28=2(d+3)+7

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Solution for 3d-12(d-9)-28=2(d+3)+7 equation:


Simplifying
3d + -12(d + -9) + -28 = 2(d + 3) + 7

Reorder the terms:
3d + -12(-9 + d) + -28 = 2(d + 3) + 7
3d + (-9 * -12 + d * -12) + -28 = 2(d + 3) + 7
3d + (108 + -12d) + -28 = 2(d + 3) + 7

Reorder the terms:
108 + -28 + 3d + -12d = 2(d + 3) + 7

Combine like terms: 108 + -28 = 80
80 + 3d + -12d = 2(d + 3) + 7

Combine like terms: 3d + -12d = -9d
80 + -9d = 2(d + 3) + 7

Reorder the terms:
80 + -9d = 2(3 + d) + 7
80 + -9d = (3 * 2 + d * 2) + 7
80 + -9d = (6 + 2d) + 7

Reorder the terms:
80 + -9d = 6 + 7 + 2d

Combine like terms: 6 + 7 = 13
80 + -9d = 13 + 2d

Solving
80 + -9d = 13 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
80 + -9d + -2d = 13 + 2d + -2d

Combine like terms: -9d + -2d = -11d
80 + -11d = 13 + 2d + -2d

Combine like terms: 2d + -2d = 0
80 + -11d = 13 + 0
80 + -11d = 13

Add '-80' to each side of the equation.
80 + -80 + -11d = 13 + -80

Combine like terms: 80 + -80 = 0
0 + -11d = 13 + -80
-11d = 13 + -80

Combine like terms: 13 + -80 = -67
-11d = -67

Divide each side by '-11'.
d = 6.090909091

Simplifying
d = 6.090909091

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