The least common denominator of addition of the fractions 4 - 15 - 1 - 12 and 3 - 8 is

The correct option is A 120 Denominator of the fraction =15,12,8 ⇒ 15=3× 5 ⇒ 12=2× 2× 3 ⇒ 8=2× 2× 2 L.C.M of 15,12,8=2× 2× 2× 5× ...

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Standard VII

Mathematics

Comparison of Rational Numbers

The least com...

Question

The least common denominator of addition of the fractions $\frac{4}{15}, \frac{1}{12}$ and $\frac{3}{8}$ is

40

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120

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180

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480

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1440

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Solution

The correct option is A $120$
Denominator of the fraction $= 15, 12, 8$
$\Rightarrow 15 = 3 \times 5$
$\Rightarrow 12 = 2 \times 2 \times 3$
$\Rightarrow 8 = 2 \times 2 \times 2$
L.C.M of $15, 12, 8 = 2 \times 2 \times 2 \times 5 \times 3 = 120$

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The least common denominator of addition of the fractions 415,112 and 38 is

The correct option is A 120Denominator of the fraction =15,12,8⇒15=3×5⇒12=2×2×3⇒8=2×2×2L.C.M of 15,12,8=2×2×2×5×3=120

The least common denominator of addition of the fractions $\frac{4}{15}, \frac{1}{12}$ and $\frac{3}{8}$ is

The correct option is A $120$
Denominator of the fraction $= 15, 12, 8$
$\Rightarrow 15 = 3 \times 5$
$\Rightarrow 12 = 2 \times 2 \times 3$
$\Rightarrow 8 = 2 \times 2 \times 2$
L.C.M of $15, 12, 8 = 2 \times 2 \times 2 \times 5 \times 3 = 120$