Aidez c'est Urgent Merci l'ex 36 !

37-[3(5+2)-4]
37-[3(7)-4]
37-[21-4]
37-[17]=
20

10(5-5+1/2)
10(5-6/2)
10(5-3)
10(2)=
20

1+[2+(4-3)5](6)
1+[2+(1)(5)](6)
1+[2+5](6)
1+[7](6)
1+42=
43

A= 37-[ 3*(5+2)-4]
=37-[21-4]
=37-17
=20