87.23+13.93+70.87=9300
81.2+8.5-7.(27-2)=27. nếu có bài nào cần hỏi thì nhớ đến tìm mình nếu mình biết thì mình giúp.
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Các câu hỏi tương tự
87x23+13x93+70x87
81x2+8x5-7x(27-2)
13+7x(x-2)=27
tinh nhanh :
7/8+1/8x3/8+1/8x5/8
tinh nhanh
3/2x5+3/8x5+3/8x11+3/11x14
Tìm x
x.73+x.27=500
4x+7x=15
5x25....................?4x25.....................?42x5.....................?8x5.......................?4x5.......................?___________________________________________________________________________________________________________________4x100..............................?65x10...............................?80x100............................?45x1000............................?______________________________________________________________________________________________________________...
Đọc tiếp
5x25=....................?
4x25=.....................?
42x5=.....................?
8x5=.......................?
4x5=.......................?
___________________________________________________________________________________________________________________
4x100=..............................?
65x10=...............................?
80x100=............................?
45x1000=............................?
___________________________________________________________________________________________________________________
Tình nhanh
a) 18x 76 +24x -150
b) 147+230+53+70
c) 7x 85+27 x 7-7 x 12
D) 2va3/5 -2/5x( 5/8-7/12)
\(\frac{3x+1}{7x^2y}+\frac{2x+2}{7x^2y}\)