0=3(7N+30+4M)

Solution for 0=3(7N+30+4M) equation:

Simplifying
0 = 3(7N + 30 + 4M)

Reorder the terms:
0 = 3(30 + 4M + 7N)
0 = (30 * 3 + 4M * 3 + 7N * 3)
0 = (90 + 12M + 21N)

Solving
0 = 90 + 12M + 21N

Solving for variable 'M'.

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

Add '-12M' to each side of the equation.
0 + -12M = 90 + 12M + -12M + 21N
Remove the zero:
-12M = 90 + 12M + -12M + 21N

Combine like terms: 12M + -12M = 0
-12M = 90 + 0 + 21N
-12M = 90 + 21N

Divide each side by '-12'.
M = -7.5 + -1.75N

Simplifying
M = -7.5 + -1.75N