3d+4d+8-1=15

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Solution for 3d+4d+8-1=15 equation:


Simplifying
3d + 4d + 8 + -1 = 15

Reorder the terms:
8 + -1 + 3d + 4d = 15

Combine like terms: 8 + -1 = 7
7 + 3d + 4d = 15

Combine like terms: 3d + 4d = 7d
7 + 7d = 15

Solving
7 + 7d = 15

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 + 7d = 15 + -7

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

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

Divide each side by '7'.
d = 1.142857143

Simplifying
d = 1.142857143

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