3-(d+7)=3(2d+1)

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Solution for 3-(d+7)=3(2d+1) equation:


Simplifying
3 + -1(d + 7) = 3(2d + 1)

Reorder the terms:
3 + -1(7 + d) = 3(2d + 1)
3 + (7 * -1 + d * -1) = 3(2d + 1)
3 + (-7 + -1d) = 3(2d + 1)

Combine like terms: 3 + -7 = -4
-4 + -1d = 3(2d + 1)

Reorder the terms:
-4 + -1d = 3(1 + 2d)
-4 + -1d = (1 * 3 + 2d * 3)
-4 + -1d = (3 + 6d)

Solving
-4 + -1d = 3 + 6d

Solving for variable 'd'.

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

Add '-6d' to each side of the equation.
-4 + -1d + -6d = 3 + 6d + -6d

Combine like terms: -1d + -6d = -7d
-4 + -7d = 3 + 6d + -6d

Combine like terms: 6d + -6d = 0
-4 + -7d = 3 + 0
-4 + -7d = 3

Add '4' to each side of the equation.
-4 + 4 + -7d = 3 + 4

Combine like terms: -4 + 4 = 0
0 + -7d = 3 + 4
-7d = 3 + 4

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

Divide each side by '-7'.
d = -1

Simplifying
d = -1

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