9(d-1)-8=7

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Solution for 9(d-1)-8=7 equation:


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

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

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

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

Solving
-17 + 9d = 7

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 + 9d = 7 + 17

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

Combine like terms: 7 + 17 = 24
9d = 24

Divide each side by '9'.
d = 2.666666667

Simplifying
d = 2.666666667

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