Evaluate- 8-3 of 4-5- of -2-1

The correct option is B 8/5 Use the BODMAS rule 8/3 of (4/5 of 2 1) (Evaluating the bracket first) =8/3 of (4/5×2 1) ('of' comes before subtraction) =8/3 ...

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Byju's Answer

Standard VII

Mathematics

Subtraction of Fractions

Evaluate: 8/3...

Question

Evaluate: $\frac{8}{3} o f (\frac{4}{5} o f 2 - 1)$

5/8

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8/5

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3/5

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5/3

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Solution

The correct option is B
8/5

Use the BODMAS rule

$\frac{8}{3} o f (\frac{4}{5} o f 2 - 1)$ (Evaluating the bracket first)

$= \frac{8}{3} o f (\frac{4}{5} \times 2 - 1)$ ('of' comes before subtraction)

$= \frac{8}{3} o f (\frac{8}{5} - 1)$

$= \frac{8}{3} o f (\frac{8}{5} - \frac{5}{5})$

$= \frac{8}{3} o f (\frac{8 - 5}{5})$

$= 2 \frac{2}{3} o f (\frac{3}{5})$

$= \frac{(2 \times 3) + 2}{3} o f (\frac{3}{5})$

$= \frac{8}{3} o f \frac{3}{5} = \frac{8}{3} \times \frac{3}{5} = \frac{8}{5}$

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Evaluate: 83 of (45 of 2−1)

The correct option is B 8/5 Use the BODMAS rule 83 of (45 of 2−1) (Evaluating the bracket first) =83 of (45×2−1) ('of' comes before subtraction) =83of(85−1) =83of(85−55) =83of(8−55) =223of(35) =(2×3)+23of(35) =83of35=83×35=85

Evaluate: $\frac{8}{3} o f (\frac{4}{5} o f 2 - 1)$