The correct option is A 8 31/2 41/2 = (31/2 + 41/2) [because x y = (x+y)] = (3 + 4 + 1/2 + 1/2) = (3 + 4 + 1) = 8 ...

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Problems Involving Difference of Fractions

-3 1/2-4 1/2=

Question

- $3 \frac{1}{2} - 4 \frac{1}{2}$ = ______

7 $\frac{1}{2}$

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-7 $\frac{1}{2}$

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-8

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-9 $\frac{1}{2}$

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Solution

The correct option is C
-8

- $3 \frac{1}{2} - 4 \frac{1}{2}$

$= - (3 \frac{1}{2} + 4 \frac{1}{2}$ ) [because -x-y = -(x+y)]

$= - (3 + 4 + \frac{1}{2} + \frac{1}{2})$

$= - (3 + 4 + 1) = - 8$

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Similar questions

$3 \frac{1}{2} - 4 \frac{1}{2}$ = ______

$3 \frac{1}{2} + 4 \frac{1}{2}$ is same as

cot (pie/24) = 2^1/2 + 3^1/2 + 4^1/2 +6^1/2

x - 3 \frac{1}{2} = 4 \frac{1}{2}

x

Prove that:
$4^{\frac{1}{3}} \times [2^{\frac{1}{3}} \times 3^{\frac{1}{2}}] \div 9^{\frac{1}{4}} = 2$ .

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