4(3+d)=9-5(3+d)

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Solution for 4(3+d)=9-5(3+d) equation:


Simplifying
4(3 + d) = 9 + -5(3 + d)
(3 * 4 + d * 4) = 9 + -5(3 + d)
(12 + 4d) = 9 + -5(3 + d)
12 + 4d = 9 + (3 * -5 + d * -5)
12 + 4d = 9 + (-15 + -5d)

Combine like terms: 9 + -15 = -6
12 + 4d = -6 + -5d

Solving
12 + 4d = -6 + -5d

Solving for variable 'd'.

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

Add '5d' to each side of the equation.
12 + 4d + 5d = -6 + -5d + 5d

Combine like terms: 4d + 5d = 9d
12 + 9d = -6 + -5d + 5d

Combine like terms: -5d + 5d = 0
12 + 9d = -6 + 0
12 + 9d = -6

Add '-12' to each side of the equation.
12 + -12 + 9d = -6 + -12

Combine like terms: 12 + -12 = 0
0 + 9d = -6 + -12
9d = -6 + -12

Combine like terms: -6 + -12 = -18
9d = -18

Divide each side by '9'.
d = -2

Simplifying
d = -2

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