Answer:
Step-by-step explanation:
the second one , why? because 7a-12a=-5a
4 - 8 = -4
Answer:
23 over 15 or 1.533
Step-by-step explanation:
Group like terms:
1+(3/5+-1/15)
Find LCD:
1+9/15+-1/15
Combine numerators:
15/15+8/15
And you get 23/15
Simplified:1 8/15
Decimal: 1.533
Your total will be $60, you will have saved $15
I don’t understand the question