Răspuns:
a=906:3+(120×4-990:10:9)×2
a=302+(480-11)·2
a=302+469·2
a=302+938
a=1240
b=825:3-(2×93+658:2-80×6)+429×5:3
b=275-(186+329-480)+715
b=275-35+715
b=955
a<b fals
a>b adevarat
a = 906 : 3 + ( 120 × 4 - 990 : 10 : 9 ) × 2
a = 302 + ( 480 - 99 : 9 ) × 2
a = 302 + ( 480 - 11 ) × 2
a = 302 + 469 × 2
a = 302 + 938
a = 1240
b = 825 : 3 - ( 2 × 93 + 658 : 2 - 80 × 6 ) + 429 × 5 : 3
b = 275 - ( 186 + 329 - 480 ) + 2145 : 3
b = 275 - ( 515 - 480 ) + 715
b = 275 - 35 + 715
b = 240 + 715
b = 955
1240 > 955 => a > b
a < b ---> fals
