Question

69426-435:[363:3-(b*2+6*4)]+12345:5=71890.Afla l pe b.

Answer 1

69426-435:[363:3-(b*2+6*4)]+12345:5=71890
69426-435:[121-(b*2+24)]+2469=71890
69426-435:[121-(b*2+24)]=71890-2469

69426-435:[121-(b*2+24)]=69421
435:[121-(b*2+24)]=69426-69421
435:[121-(b*2+24)]=5
121-(b*2+24)=435:5
121-(b*2+24)=87
b*2+24=121-87
b*2+24=34
b*2=34-24
b*2=10
b=10:2
b=5