Answer:
i belive its A
Step-by-step explanation:
y= 7 x or 21=7x3
y = 21 x=3
21 = 7x3
7x3=21
x=0.75
Hope this helps!
180 - 110 = 70
<DBC = 70
1/2x or x/2
You're taking the number you started with and either multiplying it by 1/2 half or dividing it by 2.