Tính a) 2/5 + 3/5 : (3/5 + -2/3) - 3 1/2 b) 1,25 : 15/20 + (25% - 5/6) : 4 2/3
Giải thích
a) 25+35:35+−23−312=25+35:−115=25−9=−435
b) 1,25:1520+25%−56:423=54.43+14−56:143=53+−712.314=3724
a) 25+35:35+−23−312=25+35:−115=25−9=−435
b) 1,25:1520+25%−56:423=54.43+14−56:143=53+−712.314=3724