Answer:
a=7.75
Step-by-step explanation:
19 = 4a − 12. 19+12=31. 31/4=7.75
Let us cross multiply.
5/9=10/x
9 x 10= 5x
90=5x
90 <u />÷ 5= 5x <span>÷ 5
18=x
So, the answer is 18. I hope this helped you, since I just learned cross multiplication last week.</span>
Answer:
3x+5x+2x+4x
Step-by-step explanation:
let x= cost of 1 book
i’m pretty sure that’s it
Answer:
5
Step-by-step explanation:
u can add 2 and 3 when their base number (3) are the same