Question

8×5÷a=40,6×a÷3=8,a÷9×4=8,a÷3×4=36,45+(5×a)=50 ajutațima va rog

Answer 1

1) 8*5/a=40
40/a=40
a=40/40
a=1
2)6*a/3=8
6*a=24
a=24/6
a=4
3)a/9*4=8
a/9=8/4
a/9=2
a=9*2
a=18
4)a/3*4=36
a/3=36/4
a/3=9
a=9*3
a=27
5)45+(5*a)=50
5*a=50-45
5*a=5
a=5/5
a=1
Sper ca te-am ajutat ! 
Coronita ?

Answer 2

8*5:a=40
40:a=40
a=40:40
a=1

6*a:3=8
6*a=8*3
6*a=24
a=24:6
a=4

a:9*4=8
a:36=8
a=36*8
a=288

a:3*4=36
a:12=36
a=36*12
a=432

45+(5*a)=50
5*a=50-45
5*a=5
a=5:5
a=1