thao78toan thao78toan 29-06-2021 Mathematics contestada a,64.25+35.25+25 b, 58.42+32.8+5.16 c,135+360+65+40 d,463+318+137+22 e,(42.43+43.57+430-360:4 f,(372-19.4+(981:9-13) g,456:2.18+456:3-102 h,20+21+22+...=29+30