Please help! A is not -3 as I’ve seen some answer with that.

Answer:
a) x = 5
b) x = 4
Step-by-step explanation:
a) [tex]\frac{3x+4}{2}[/tex] = 9.5
3x+4 = 9.5(2)
3x = 19-4
x = 15/3
x = 5
b) [tex]\frac{7+2x}{3}[/tex] = 5
7+2x = 5(3)
2x = 15-7
x = 8/2
x=4