7n=5n-3 (n standing for the number)
Subtract 5n from both sides
2n=-3
Divide by 2 on both sides
n=2/-3
I think the answer is (-0.5, -1.5).
Answer:
don't know that sorry can you help me though
Answer:
125 adults
175 children
Step-by-step explanation:
3900=8c+20a
300=c+a
c=300-a
substitute
3900=8(300-a)+20a
reduce
3900=2400-8a+20a
1500=12a
a=125 adults
substitute for a
c=300-a
c=300-125
c=175 children