k = ( 0,75 - 0, 6 + 3/7 + 3/3) : ( 11/7 + 11/3 + 2,75 + 2,2)
= ( 3/4 + 3/5 + 3/7 + 3/3) : ( 11/7 + 11/3 + +11/4 + 11/5 )
= 3 x (1/4 + 1/5 + 1/7 +1/3) : 11 x ( 1/7 + 1/3 + 1/4 + 1/5)
= 3/11
( Xem lại xem 3/3 hay 3/13)
P= 0.75 . 0.6 + 3/7 + 3/13 phần
2.75 - 2.2 + 11/7 + 11/13
\(\frac{0.75-0.6+\frac{3}{7}+\frac{3}{13}}{2.75-2.2+\frac{11}{7}+\frac{11}{13}}\)
Tính nhanh \(A=\frac{0.75+0.6-\frac{3}{7}-\frac{3}{13}}{2.75+2.2-\frac{11}{7}-\frac{11}{13}}\) GIẢI HỘ EM VỚI TỐI NAY E NỘP RỒI :)
Bài 1: tính
0.7+0.6-3/7-3/13
2.75+2.2-11/7-11/13
cả cách làm nhé bài dễ ai nhanh mick tích cho
Tính nhanh: (-19/9/17 + 18/4/17):(11/7 + 11/13 + 2/3/4 - 2,2)x(0.75 -0.6+3/7+3/13)
tính A=(0,75-0,6+3/7+3/13)*(11/7+11/3+2.75-2,2)
P= 0,75-0,6+3/7+3/13
2,75-2.2+11/7+11/3
tính
1/3-3/5+5/7-7/9+9/11-11/13+13/15+11/13-9/11+7/9-5/7+3/5
b, A=1/3-3/5+5/7+7/9+9/11-11/13+13/15-9/11+7/9-5/7+3/5-1/3
