Răspuns :
30-4x(20-12:ax3):32+7=37 |-7
30-4x(20-12:ax3):32=30 |+30
4x(20-12:ax3):32=60 |:4
(20-12:ax3):32=15 |x32
20-12:ax3=480 |+20
12:ax3=500 |x12
ax3=6000 |:3
a=2000
[2+(3-3)+(7x7-77x6)] x2-2x2(2+9-a)=?
30-4x(20-12:ax3):32+7=37 |-7
30-4x(20-12:ax3):32=30 |+30
4x(20-12:ax3):32=60 |:4
(20-12:ax3):32=15 |x32
20-12:ax3=480 |+20
12:ax3=500 |x12
ax3=6000 |:3
a=2000
[2+(3-3)+(7x7-77x6)] x2-2x2(2+9-a)=?