Răspuns:
75:{30-[24×(20-12:x3)]:12+7}+3=8
75:{30-[24×(20-36/x)]/12+7}=8-3
75:{30-[24×(20-36/x)]/12+7}=5
75:5={30-[24×(20-36/x)]/12+7}
15=30-[24×(20-36/x)]/12+7
0=30-[24×(20-36/x)]/12+7-15
22-2(20-36/x)=0
22-2(20-36/x)
22-40-36/x
36/x=40-22
36/x=18
x=36:18
x=2
