\(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)
\(=\frac{11}{125}+\left(\frac{-17}{18}+\frac{4}{8}\right)+\left(\frac{-5}{7}+\frac{17}{14}\right)\)
\(=11+\left(\frac{-17}{18}+\frac{8}{18}\right)+\left(\frac{-10}{14}+\frac{17}{14}\right)\)
\(=\frac{11}{125}+\left(\frac{-9}{18}\right)+\frac{7}{14}\)
\(=\frac{11}{125}+\left(\frac{-1}{2}+\frac{1}{2}\right)\)
\(=\frac{11}{125}+0\)
\(=\frac{11}{125}\)
a) 11/125 - 17/18 - 5/7 + 4/7 + 17/14
b) (-1/2)-(-3/5)+(-1/9)+1/127-(7/18)+4/35-(-2/7)
Tính một cách hợp lí:
\(\dfrac{11}{125}-\dfrac{17}{18}-\dfrac{5}{7}+\dfrac{4}{9}+\dfrac{17}{14}\)
Thực hiện phép tính bằng các hợp lý:
11/125 - 17/18 - 5/7 + 4/9 + 17/14
a) \(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)
M.n giup em vs mai em nop r
Thực hiện phép tính 1 cách hợp lí:
a, 11/125-17/18-5/7+4/9+17/14
b,1-1/2+2-2/3+3-3/4+4-1/4-3-1/3-2-1/2-1
Tính
a , 1/1.2 + 1/1.3 + .... +1/50.51
b, 3/14 : 1/28 - 13/21 : 1/28 + 29/42 : 1/28 - 8
c, 11/125 - 17/18 - 5/7 + 4/9 + 17/14
Giúp mk với
a) 11/125 - 17/18 - 5/7 + 4/9 + 17/14
b) 1 - 1/2 + 2 - 2/3 + 3 - 3/4 +4 - 1/4 - 3 - 1/3 - 2 - 1/2 -1
Giúp Mình Nha ! ( ^_^)
CẢM ƠN !
tính:
a) \(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)
b) \(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{29}{42}:\frac{1}{28}-8\)
Bài 1:
a,11/125-17/18-5/7+4/9+17/14
b,(7+7/5-2/3)-(4+4/5+3/8)+(3-3/5+2/3+3/8)
c,-13/25.5/32.23/-13.(-64)
Bài 2:
a,11/13-(3/42-x)=-(13/28-11/13)
b,x2/3x+5/7=3/10
c,x-21/13x+1/3=-2/3
