2/5 = 8/20
8/20 + 5/20 = 13/20
13/20 - 1/4 = 2/5
Step-by-step explanation:
Let's subtitute 
for the above equation:
Answer:
x=4
Step-by-step explanation:
what i did is try to make some whole number and the minimum i got was 4.
1/4 = 0.25 so then do 12+4=16. then do 16*0.25=4. now do 4-6=(-2) then 1/2=0.5. now do 0.5* -2= -1. now do 4-1=3. now when there's no answer x can equal anything
N-5=m
6m-3n=3
6(n-5)-3n=3
6n-30-3n=3
3n=33
n=11
m=6
just use substitution to plug in m in terms of n and solve
Answer: The phone company Splint has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 320 minutes, the monthly cost will be $132. If the customer uses 520 minutes, the monthly cost will be $202.
Step-by-step explanation:
