2d-7=3(d-9)

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


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

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

Reorder the terms:
-7 + 2d = 3(-9 + d)
-7 + 2d = (-9 * 3 + d * 3)
-7 + 2d = (-27 + 3d)

Solving
-7 + 2d = -27 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
-7 + 2d + -3d = -27 + 3d + -3d

Combine like terms: 2d + -3d = -1d
-7 + -1d = -27 + 3d + -3d

Combine like terms: 3d + -3d = 0
-7 + -1d = -27 + 0
-7 + -1d = -27

Add '7' to each side of the equation.
-7 + 7 + -1d = -27 + 7

Combine like terms: -7 + 7 = 0
0 + -1d = -27 + 7
-1d = -27 + 7

Combine like terms: -27 + 7 = -20
-1d = -20

Divide each side by '-1'.
d = 20

Simplifying
d = 20

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