8.6=d+4-2.4

Solution for 8.6=d+4-2.4 equation:

Simplifying
8.6 = d + 4 + -2.4

Reorder the terms:
8.6 = 4 + -2.4 + d

Combine like terms: 4 + -2.4 = 1.6
8.6 = 1.6 + d

Solving
8.6 = 1.6 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
8.6 + -1d = 1.6 + d + -1d

Combine like terms: d + -1d = 0
8.6 + -1d = 1.6 + 0
8.6 + -1d = 1.6

Add '-8.6' to each side of the equation.
8.6 + -8.6 + -1d = 1.6 + -8.6

Combine like terms: 8.6 + -8.6 = 0.0
0.0 + -1d = 1.6 + -8.6
-1d = 1.6 + -8.6

Combine like terms: 1.6 + -8.6 = -7
-1d = -7

Divide each side by '-1'.
d = 7

Simplifying
d = 7