Answer:
3. b= 5
4. d= -5
5. z= 2/3
Explanation:
3) 5b-3=22
5b=25 add 3 to both sides
b= 5 divide 5 from both sides
4) 1.5d+3=-4.5
1.5d=-7.5 subtract 3 from both sides
d=-5 divide 1.5 from both sides
5) 4=9z-2
6=9z add 2 to both sides
6/9=z divide 9 from both sides
2/3=z simplify