B - 3/4 = 7/10
add 3/4 to both sides to isolate the b
b = 7/10 + 3/4
b = 28/40 + 30/40
b = 58/40
b = 1 18/40
b = 1 9/20
1= -6
2= -5
3= -4
4= -3
5= 0
6= 3
1 1/6, 1 2/3, 1 5/6 is the order. :) hope I helped!
Step-by-step explanation:
△BAC ≅ △EDF (given)
Therefore,
BC=EF
x-4=19
x=23