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\(\dfrac{3}{5}+\dfrac{4}{3}\times\dfrac{5}{6}=\dfrac{3}{5}+\dfrac{10}{9}=\dfrac{27}{45}+\dfrac{50}{45}=\dfrac{77}{45}\)
\(2-\dfrac{7}{6}+\dfrac{1}{3}=\dfrac{12}{6}-\dfrac{7}{6}+\dfrac{2}{6}=\dfrac{7}{6}\)
\(\dfrac{7}{6}\times3-\dfrac{3}{5}=\dfrac{7}{2}-\dfrac{3}{5}=\dfrac{35}{10}-\dfrac{6}{10}=\dfrac{29}{10}\)
a) \(\dfrac{3}{5}\times x=\dfrac{4}{7}\)
\(x=\dfrac{4}{7}\div\dfrac{3}{5}\)
\(x=\dfrac{20}{21}\)
b) \(\dfrac{1}{8}\div x=\dfrac{1}{5}\)
\(x=\dfrac{1}{8}\div\dfrac{1}{5}\)
\(x=\dfrac{5}{8}\)
2/3 + 3/4=17/12
9/4 + 3/5=57/20
5/24 + 1/4=11/24
3/15 - 5/35=2/35 18/27 - 2/6=1/3 37/12 - 3=1/12
11/9 x 3/22=1/6 7/13 x 13/7=1 4 x6/7=24/7
2/5 : 3/10=4/3 3/8 : 9/4=1/6 8/21 : 4/7=2/3
43/250+40/250=83/250
12/25+1/5=120/250+50/250=170/250
=>43/250+40/250<12/25+1/5
\(=\dfrac{10}{8};\dfrac{3}{8}\)
\(=\dfrac{36}{30};\dfrac{25}{30}\)
\(=\dfrac{65}{20};\dfrac{12}{20}\)
\(3:\dfrac{3}{4}=3.\dfrac{4}{3}=\dfrac{12}{3}\)
\(\dfrac{3}{4}:3=\dfrac{3}{4}.\dfrac{1}{3}=\dfrac{1}{4}\)
\(5:\dfrac{7}{8}=5.\dfrac{8}{7}=\dfrac{40}{7}\)
\(\dfrac{7}{8}:5=\dfrac{7}{8}.\dfrac{1}{5}=\dfrac{7}{40}\)
\(3:\dfrac{3}{4}=3\text{×}\dfrac{4}{3}=4\)
\(\dfrac{3}{4}:3=\dfrac{4}{3}\text{×}3=\dfrac{1}{4}\)
\(5:\dfrac{7}{8}=5\text{×}\dfrac{8}{7}=\dfrac{40}{7}\)
\(\dfrac{7}{8}:5=\dfrac{8}{7}\text{×}5=\dfrac{7}{40}\)