\(\dfrac{\dfrac{3}{4}-0,6+\dfrac{3}{7}+\dfrac{3}{13}}{\dfrac{11}{13}+\dfrac{11}{7}-2,2+2,75}\\ =\dfrac{\dfrac{3}{4}-\dfrac{3}{5}+\dfrac{3}{7}+\dfrac{3}{13}}{\dfrac{11}{13}+\dfrac{11}{7}-\dfrac{11}{5}+\dfrac{11}{4}}\\ =\dfrac{3\left(\dfrac{1}{4}-\dfrac{1}{5}+\dfrac{1}{7}+\dfrac{1}{13}\right)}{11\left(\dfrac{1}{13}+\dfrac{1}{7}-\dfrac{1}{5}+\dfrac{1}{4}\right)}\\ =\dfrac{3}{11}\)
0,75+0,6-3/7-3/13
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2,75+2,2-11/7-11/13
1,TÍNH NHANH:
0,75-0,6+3/7+3/13
2,75-2,2+11/7+11/13
Tính giá trị biểu thức \(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}+\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{13}}{\frac{11}{4}-\frac{11}{5}+\frac{11}{7}+\frac{11}{13}}\)
( 3-3/4+2/3)-(2+4/3-3/2)-(1-7/3-9/2)
-1/3-8/35+-2/9-1/135+4/5+-4/9+3/7
0,75+0,6-3/7-3/13
______________________
2,75+2,2-11/7-11/13
\(0,75+0,6+\frac{3}{7}+\frac{3}{13}\)
____________________________
\(2,75+2,2-\frac{11}{7}-\frac{11}{13}\)
Tính nhanh P=\(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
tính nhanh
P=\(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
\(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{3}}\)
tính nhanh giá trị của biểu thức
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
