-4z+1 = bz+c
Take all z's to one side
1 = bz+c+4z
Then take c to the other side
1-c = bz+4z
Factor out z on the right side
1-c = z(b+4)
Then divide (b+4) from both sides
z = 1-c/b+4 or (1-c)/(b+4)
2(x+12x) = 2x + 24x
2x+24x - 2x2= 2x+24x - 4
2x + 24x = 26x
26x - 4 is your answer
The answer is An hour and a half
1 and 1/6 is the correct answer because 4/1 multiplied by 1/3 is 4/3. 4/3 multiplied by 7/8 is 28/24 or 1 and 4/24, which can be simplified down to 1 and 1/6.