=19/13 + 7/8 + 1/9 + 2/3 + 7/13 + 17/19
=6221/1368
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Các câu hỏi tương tự
19/13 + 14/16 + 1/9 + 4/6 + 7/13 + 17/19
19/13 + 14/16 + 1/9 +4/6 +7/13 + 17/9 nhớ ghi cách tính đầy đủ nha
TÍNH NHANH
19/13 -14/16 - 4/6 - 7/13 - 17/9
19/13+14/6+1/9+4/6+7/13+17/9
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20
1+2+3-4+5+6-7+8+9-10+11+12-13+14+15-16+17+18-19+20:15x2
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+.........................50= ?