7d-3d-d-2d+1=10

Solution for 7d-3d-d-2d+1=10 equation:

Simplifying
7d + -3d + -1d + -2d + 1 = 10

Reorder the terms:
1 + 7d + -3d + -1d + -2d = 10

Combine like terms: 7d + -3d = 4d
1 + 4d + -1d + -2d = 10

Combine like terms: 4d + -1d = 3d
1 + 3d + -2d = 10

Combine like terms: 3d + -2d = 1d
1 + 1d = 10

Solving
1 + 1d = 10

Solving for variable 'd'.

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

Add '-1' to each side of the equation.
1 + -1 + 1d = 10 + -1

Combine like terms: 1 + -1 = 0
0 + 1d = 10 + -1
1d = 10 + -1

Combine like terms: 10 + -1 = 9
1d = 9

Divide each side by '1'.
d = 9

Simplifying
d = 9