7d-9-(d+8)=

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Solution for 7d-9-(d+8)= equation:


Simplifying
7d + -9 + -1(d + 8) = 0

Reorder the terms:
7d + -9 + -1(8 + d) = 0
7d + -9 + (8 * -1 + d * -1) = 0
7d + -9 + (-8 + -1d) = 0

Reorder the terms:
-9 + -8 + 7d + -1d = 0

Combine like terms: -9 + -8 = -17
-17 + 7d + -1d = 0

Combine like terms: 7d + -1d = 6d
-17 + 6d = 0

Solving
-17 + 6d = 0

Solving for variable 'd'.

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

Add '17' to each side of the equation.
-17 + 17 + 6d = 0 + 17

Combine like terms: -17 + 17 = 0
0 + 6d = 0 + 17
6d = 0 + 17

Combine like terms: 0 + 17 = 17
6d = 17

Divide each side by '6'.
d = 2.833333333

Simplifying
d = 2.833333333

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