Answer:
a) -10
b) 7
Step-by-step explanation:
a) 



b) 




3/4+2/3= 17/12
Step-by-step explanation:
Answer:
-0.75 as a fraction is -3/4
Explanation:
-3 divided by 4 is -0.75
Answer: it’s the second one
Step-by-step explanation:
David sold 60 bottles and Sammy sold 100 bottles. x(5+3)=160; 5x+3x=160; 8x=160; 8x/8=160/8; x=20; 20(5+30); 100+60=160