m+m+m+m+m+(-a)=5m-d-a

Solution for m+m+m+m+m+(-a)=5m-d-a equation:

Simplifying
m + m + m + m + m + (-1a) = 5m + -1d + -1a

Reorder the terms:
(-1a) + m + m + m + m + m = 5m + -1d + -1a

Combine like terms: m + m = 2m
(-1a) + 2m + m + m + m = 5m + -1d + -1a

Combine like terms: 2m + m = 3m
(-1a) + 3m + m + m = 5m + -1d + -1a

Combine like terms: 3m + m = 4m
(-1a) + 4m + m = 5m + -1d + -1a

Combine like terms: 4m + m = 5m
(-1a) + 5m = 5m + -1d + -1a

Reorder the terms:
(-1a) + 5m = -1a + -1d + 5m

Add '(a)' to each side of the equation.
(-1a) + (a) + 5m = -1a + -1d + (a) + 5m
(-1a) + a + 5m = -1a + -1d + (a) + 5m

Combine like terms: (-1a) + a = 0
0 + 5m = -1a + -1d + (a) + 5m
5m = -1a + -1d + (a) + 5m
5m = -1a + -1d + a + 5m

Reorder the terms:
5m = -1a + a + -1d + 5m

Combine like terms: -1a + a = 0
5m = 0 + -1d + 5m
5m = -1d + 5m

Add '-5m' to each side of the equation.
5m + -5m = -1d + 5m + -5m

Combine like terms: 5m + -5m = 0
0 = -1d + 5m + -5m

Combine like terms: 5m + -5m = 0
0 = -1d + 0
0 = -1d

Solving
0 = -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
0 + d = -1d + d
Remove the zero:
d = -1d + d

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

Simplifying
d = 0