-1+4(-4m+1)=-45

Solution for -1+4(-4m+1)=-45 equation:

Simplifying
-1 + 4(-4m + 1) = -45

Reorder the terms:
-1 + 4(1 + -4m) = -45
-1 + (1 * 4 + -4m * 4) = -45
-1 + (4 + -16m) = -45

Combine like terms: -1 + 4 = 3
3 + -16m = -45

Solving
3 + -16m = -45

Solving for variable 'm'.

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

Add '-3' to each side of the equation.
3 + -3 + -16m = -45 + -3

Combine like terms: 3 + -3 = 0
0 + -16m = -45 + -3
-16m = -45 + -3

Combine like terms: -45 + -3 = -48
-16m = -48

Divide each side by '-16'.
m = 3

Simplifying
m = 3