3.1(d-6)+1=7.2

Solution for 3.1(d-6)+1=7.2 equation:

Simplifying
3.1(d + -6) + 1 = 7.2

Reorder the terms:
3.1(-6 + d) + 1 = 7.2
(-6 * 3.1 + d * 3.1) + 1 = 7.2
(-18.6 + 3.1d) + 1 = 7.2

Reorder the terms:
-18.6 + 1 + 3.1d = 7.2

Combine like terms: -18.6 + 1 = -17.6
-17.6 + 3.1d = 7.2

Solving
-17.6 + 3.1d = 7.2

Solving for variable 'd'.

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

Add '17.6' to each side of the equation.
-17.6 + 17.6 + 3.1d = 7.2 + 17.6

Combine like terms: -17.6 + 17.6 = 0.0
0.0 + 3.1d = 7.2 + 17.6
3.1d = 7.2 + 17.6

Combine like terms: 7.2 + 17.6 = 24.8
3.1d = 24.8

Divide each side by '3.1'.
d = 8

Simplifying
d = 8