2d+3(d-1)-9(d+2)=5

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Solution for 2d+3(d-1)-9(d+2)=5 equation:


Simplifying
2d + 3(d + -1) + -9(d + 2) = 5

Reorder the terms:
2d + 3(-1 + d) + -9(d + 2) = 5
2d + (-1 * 3 + d * 3) + -9(d + 2) = 5
2d + (-3 + 3d) + -9(d + 2) = 5

Reorder the terms:
2d + -3 + 3d + -9(2 + d) = 5
2d + -3 + 3d + (2 * -9 + d * -9) = 5
2d + -3 + 3d + (-18 + -9d) = 5

Reorder the terms:
-3 + -18 + 2d + 3d + -9d = 5

Combine like terms: -3 + -18 = -21
-21 + 2d + 3d + -9d = 5

Combine like terms: 2d + 3d = 5d
-21 + 5d + -9d = 5

Combine like terms: 5d + -9d = -4d
-21 + -4d = 5

Solving
-21 + -4d = 5

Solving for variable 'd'.

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

Add '21' to each side of the equation.
-21 + 21 + -4d = 5 + 21

Combine like terms: -21 + 21 = 0
0 + -4d = 5 + 21
-4d = 5 + 21

Combine like terms: 5 + 21 = 26
-4d = 26

Divide each side by '-4'.
d = -6.5

Simplifying
d = -6.5

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