tính hợp lí a,-2/3+-1/3+3/5-1/5 b,5/19+-7/-7/15+8/15+3/15 c,2/3+-2/5+-5/6-13/10 d,34/19+-7/15+-8/15-15/19 e,-2/-3.4/5+-2/3+.-1/5

2025-03-04 02:33:15

tính hợp lí a,-2/3+-1/3+3/5-1/5 b,5/19+-7/-7/15+8/15+3/15 c,2/3+-2/5+-5/6-13/10 d,34/19+-7/15+-8/15-15/19 e,-2/-3.4/5+-2/3+.-1/5 g,-3/7.3/-9+-2/3.-3/7+2/18.-3/7

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