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nhungnguyen300499
2 năm trước
1.a) 4/7 - 5/7 :10/3 b) 4/29 .3/13+3/13.25/29+-7/26 c) (15/40 - 75% + 7/12): 5/6 - 1 1/2 2.a) 3/4 - 5/2x = 15/18 b) (3x/14 + 1) : (-5) = -1/35 c) x- 0,25x=1 1/2 d) |2x - 7|= 19 giups mình nhanh với ,mình cần gấp lắm.
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