Explicație pas cu pas:
a=38:2+[2×25-(15-320:40)×4]:11
a=38:2+[2×25-(15-8)×4]:11
a=38:2+(2×25-7×4):11
a=38:2+(50-28):11
a=38:2+22:11
a=19+2
a=21
b=9×15-[25-(32:8×3+40×7:10):2]×6
b=9×15-[25-(4×3+280:10):2]×6
b=9×15-[25-(12+28):2]×6
b=9×15-(25-40:2)×6
b=9×15-(25-20)×6
b=9×15-5×6
b=135-30
b=105
a×5=b
a=21
b=105
21×5=105✔
