Question 4442
1)
4y-15=-10
4y=-10 +15
4y = 5
y =5/4 = 1.25

2)
3-4d=13
-4d = 13- 3
-4d = 10
d =10/(-4)
d = -2.5

3)
8=9x-7
8-7 = 9x
1 =9x
x = 1/9