Answer:
z= -55 / 5-y
the line is a divided by sign you put 55 on top and the 5-y on bottom
A quantity that may change
75 42
----- -----
100 x
75 x= 4200
--- ------
75 75
x = 56
Answer:
x = 64
Step-by-step explanation:
looking at the other sides, you find that each side had just been doubled.
So if you want to add
we distribute
a(b+c)=ab+ac so
-2(m+n-4)=-2m-2n+8
5(-2m+2n)=-10m+10n
n(m+4n-5)=mn+4n^2-5n
so total we ahve
-2m-2n+8-10m+10n+mn+4n^2-5n
group like terms
4n^2+-2m-10m-2n+10n-5n+mn+8
add like temrs
4n^2-12m+3n+mn+8
