Answer:
A) 9. B) 12. C) - 3. D) 11
Explanation:
3x+4=31
3x=31-4
3x=27
X=9
.....
3b-36=0
3b=36
B=12
2(x-3)=-12
2x-6=-12
2x=-12+6
2x=-6
X=-3
......
3a-1=32
3a=32+1
3a=33
A=11
3.3m questions
4.1m answers