8*4=(d*7)-(d*3)

Solution for 8*4=(d*7)-(d*3) equation:

Simplifying
8 * 4 = (d * 7) + -1(d * 3)

Multiply 8 * 4
32 = (d * 7) + -1(d * 3)

Reorder the terms for easier multiplication:
32 = (7d) + -1(d * 3)

Reorder the terms for easier multiplication:
32 = (7d) + -1(3d)

Remove parenthesis around (3d)
32 = (7d) + -1 * 3d

Multiply -1 * 3
32 = (7d) + -3d

Combine like terms: (7d) + -3d = 4d
32 = 4d

Solving
32 = 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
32 + -4d = 4d + -4d

Combine like terms: 4d + -4d = 0
32 + -4d = 0

Add '-32' to each side of the equation.
32 + -32 + -4d = 0 + -32

Combine like terms: 32 + -32 = 0
0 + -4d = 0 + -32
-4d = 0 + -32

Combine like terms: 0 + -32 = -32
-4d = -32

Divide each side by '-4'.
d = 8

Simplifying
d = 8