dễ lắm nè

15(1

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sorry mk trả lời lại nè\(\dfrac{15\cdot\left(\dfrac{1}{6\cdot16}+\dfrac{1}{16\cdot26}+\dfrac{1}{26\cdot36}\right)}{33\cdot\left(\dfrac{1}{6\cdot16}+\dfrac{1}{16\cdot26}+\dfrac{1}{26\cdot36}\right)}=\dfrac{15}{33}\)

\(\dfrac{33}{6.16}\)-\(\dfrac{63}{16.26}\)+\(\dfrac{93}{26.36}\)

=\(\dfrac{3.11}{3.2.16}\)-\(\dfrac{3.21}{13.2.16}\)+\(\dfrac{93}{26.36}\)

=\(\dfrac{1}{2.16}\).11+\(\dfrac{1}{2.16}\).\(\dfrac{3.21}{13}\)+\(\dfrac{93}{26.36}\)

=\(\dfrac{1}{32}\).\(\dfrac{143-63}{13}\)+\(\dfrac{31.3}{26.36}\)

=\(\dfrac{1}{32}\).\(\dfrac{143-63}{13}\)+\(\dfrac{31.3}{26.3.12}\)

=\(\dfrac{1}{32}\).\(\dfrac{80}{13}\)+\(\dfrac{31}{36.12}\)

=\(\dfrac{5}{26}\)+\(\dfrac{31}{26.12}\)

=\(\dfrac{60+31}{26.12}\)

=\(\dfrac{91}{26.12}\)

=\(\dfrac{13.7}{13.2.12}\)

=\(\dfrac{7}{24}\)

= 5/14

5/14 nha

\(\frac{5}{14}\)nha bạn

\(\Rightarrow B=\frac{\frac{3}{2}.\left(\frac{1}{6}-\frac{1}{16}+\frac{1}{16}-\frac{1}{26}+\frac{1}{26}-\frac{1}{36}\right)}{\frac{33}{10}.\left(\frac{1}{6}-\frac{1}{16}+\frac{1}{16}-\frac{1}{26}+\frac{1}{26}-\frac{1}{36}\right)}=\frac{\frac{3}{2}}{\frac{33}{10}}=\frac{3}{2}:\frac{33}{10}=\frac{5}{11}\)

\(\frac{\frac{15}{6.16}+\frac{15}{16.26}+\frac{15}{26.36}}{\frac{33}{6.16}-\frac{63}{16.26}-\frac{93}{26.36}}\) 

\(=\frac{\frac{15}{10}\cdot\left(\frac{1}{6}-\frac{1}{16}+\frac{1}{16}-\frac{1}{26}+\frac{1}{26}-\frac{1}{36}\right)}{\frac{11}{32}-\frac{63}{416}-\frac{31}{312}}\)

\(=\frac{\frac{15}{10}\cdot\left(\frac{1}{6}-\frac{1}{36}\right)}{\frac{143}{416}-\frac{63}{416}-\frac{124}{\frac{3}{416}}}=\frac{\frac{5}{24}}{\frac{143-63-\frac{124}{3}}{416}}\)

\(=\frac{\frac{5}{24}}{\frac{116}{\frac{3}{416}}}=\frac{\frac{5}{24}}{\frac{29}{312}}=\frac{65}{29}\)

phần cuối là trừ hết nhá mình bấm nhầm

nếu phần cuối giống như trên thì bạn nào biết làm ko

\(\frac{15.\left(\frac{1}{616}.\frac{1}{6.16}.\frac{1}{6.16}\right)}{33.\left(\frac{1}{6.16}.\frac{1}{6.16}.\frac{1}{6.16}\right)}=\frac{15}{35}\)