Answer:
m=7
Step-by-step explanation:
12m=84
Divide each side by 12
12m/12 =84/12
m =7
well, you have to divide 84 by 12, and that will give you your answer. i don't wanna give you the full-blown answer, that would kinda be cheating for you. but your welcome for giving you a method on how to solve it.
40
7.43
y²-y-4x=0
differentiate w.r.t. x
2y*y^1-y^1-4=0
(2y-1)y^1=4
y^1=4/(2y-1)
