7d+2(4d+1)-9=

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Solution for 7d+2(4d+1)-9= equation:


Simplifying
7d + 2(4d + 1) + -9 = 0

Reorder the terms:
7d + 2(1 + 4d) + -9 = 0
7d + (1 * 2 + 4d * 2) + -9 = 0
7d + (2 + 8d) + -9 = 0

Reorder the terms:
2 + -9 + 7d + 8d = 0

Combine like terms: 2 + -9 = -7
-7 + 7d + 8d = 0

Combine like terms: 7d + 8d = 15d
-7 + 15d = 0

Solving
-7 + 15d = 0

Solving for variable 'd'.

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

Add '7' to each side of the equation.
-7 + 7 + 15d = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 15d = 0 + 7
15d = 0 + 7

Combine like terms: 0 + 7 = 7
15d = 7

Divide each side by '15'.
d = 0.4666666667

Simplifying
d = 0.4666666667

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