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Mathematics

Simplify :

(22÷512)\Big(22÷5\dfrac{1}{2}\Big) ÷ 2152\dfrac{1}{5} of 313+15113\dfrac{1}{3} + 1\dfrac{5}{11}

Fractions

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Answer

We have:

(22÷512)\Big(22÷5\dfrac{1}{2}\Big) ÷ 2152\dfrac{1}{5} of 313+15113\dfrac{1}{3} + 1\dfrac{5}{11}

= (22÷112)\Big(22÷\dfrac{11}{2}\Big) ÷ 115\dfrac{11}{5} of 103\dfrac{10}{3} + 1611\dfrac{16}{11} [Converting mixed to improper fraction]

According to BODMAS rule, we simplify brackets first

=(22×211)÷115 of 103+1611[Reciprocal of 112 is 211]=(4411)÷115 of 103+1611[Divide 44 and 11 by 11]=41÷115 of 103+1611[Bracket simplified]=41÷115×103+1611=41÷11015+1611[Divide 110 and 15 by 5]=41÷223+1611[Of simplified]=41×322+1611[Reciprocal of 223 is 322]=1222+1611[Divide 12 and 22 by 2]=611+1611[Division simplified]=6+1611=2211[Divide 22 and 11 by 11]=2[Division simplified]\begin{array}{ll} = \Big(22 \times \dfrac{2}{11}\Big) ÷ \dfrac{11}{5}\text{ of }\dfrac{10}{3} + \dfrac{16}{11} & [\text{Reciprocal of } \dfrac{11}{2} \text{ is } \dfrac{2}{11}] \\ = \Big(\dfrac{44}{11}\Big) ÷ \dfrac{11}{5}\text{ of }\dfrac{10}{3} + \dfrac{16}{11} & \text{[Divide 44 and 11 by 11]} \\ = \dfrac{4}{1} ÷ \dfrac{11}{5}\text{ of }\dfrac{10}{3} + \dfrac{16}{11} & \text{[Bracket simplified]} \\ = \dfrac{4}{1} ÷ \dfrac{11}{5} \times \dfrac{10}{3} + \dfrac{16}{11} \\ = \dfrac{4}{1} ÷ \dfrac{110}{15} + \dfrac{16}{11} & \text{[Divide 110 and 15 by 5]} \\ = \dfrac{4}{1} ÷ \dfrac{22}{3} + \dfrac{16}{11} & \text{[Of simplified]} \\ = \dfrac{4}{1} \times \dfrac{3}{22} + \dfrac{16}{11} & [\text{Reciprocal of } \dfrac{22}{3} \text{ is } \dfrac{3}{22}] \\ = \dfrac{12}{22} + \dfrac{16}{11} & \text{[Divide 12 and 22 by 2]} \\ = \dfrac{6}{11} + \dfrac{16}{11} & \text{[Division simplified]} \\ = \dfrac{6 + 16}{11} = \dfrac{22}{11} & \text{[Divide 22 and 11 by 11]} \\ = 2 & \text{[Division simplified]} \end{array}

∴ The answer is 2

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