7.4z-5(-1.6z+2.4)
7.4z+8z-12
15.4z-12
Hope this helps :)
3.10+1.40= 4.50 nearest tenth
8+2x
x standing for Julie's age
4(y-3)=3(y+6)
1) Distribute
4y-12=3y+18
2) Addition property of equality
4y=3y+30
3)Subtraction property of equality
y=30
Thats your answer!
Enjoy middle school while you still can!