7d-9-(d+4)=

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Solution for 7d-9-(d+4)= equation:


Simplifying
7d + -9 + -1(d + 4) = 0

Reorder the terms:
7d + -9 + -1(4 + d) = 0
7d + -9 + (4 * -1 + d * -1) = 0
7d + -9 + (-4 + -1d) = 0

Reorder the terms:
-9 + -4 + 7d + -1d = 0

Combine like terms: -9 + -4 = -13
-13 + 7d + -1d = 0

Combine like terms: 7d + -1d = 6d
-13 + 6d = 0

Solving
-13 + 6d = 0

Solving for variable 'd'.

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

Add '13' to each side of the equation.
-13 + 13 + 6d = 0 + 13

Combine like terms: -13 + 13 = 0
0 + 6d = 0 + 13
6d = 0 + 13

Combine like terms: 0 + 13 = 13
6d = 13

Divide each side by '6'.
d = 2.166666667

Simplifying
d = 2.166666667

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