Question

1+3×[3+8×(7-3)+3×(5+6)] si [55×5-(199-99×2+20×5)+220:10]:4

Answer 1

1+3×[3+8×(7-3)+3×(5+6)]
=1+3×(3+8×4+3×11)
=1+3×(3+32+33)
=1+3×(35+33)
=1+3×68
=1+204
=205

[55×5-(199-99×2+20×5)+220:10]:4
=[275-(199-198+100)+22]:4
=[275-(1+100)+22]:4
=(275-101+22):4
=(174+22):4
=196:4
=49