(7d+7)-(2d+4)=

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Solution for (7d+7)-(2d+4)= equation:


Simplifying
(7d + 7) + -1(2d + 4) = 0

Reorder the terms:
(7 + 7d) + -1(2d + 4) = 0

Remove parenthesis around (7 + 7d)
7 + 7d + -1(2d + 4) = 0

Reorder the terms:
7 + 7d + -1(4 + 2d) = 0
7 + 7d + (4 * -1 + 2d * -1) = 0
7 + 7d + (-4 + -2d) = 0

Reorder the terms:
7 + -4 + 7d + -2d = 0

Combine like terms: 7 + -4 = 3
3 + 7d + -2d = 0

Combine like terms: 7d + -2d = 5d
3 + 5d = 0

Solving
3 + 5d = 0

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + 5d = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 5d = 0 + -3
5d = 0 + -3

Combine like terms: 0 + -3 = -3
5d = -3

Divide each side by '5'.
d = -0.6

Simplifying
d = -0.6

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