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Operations on Rational Numbers

Question

Simplify:
$$\left(\dfrac{-4}{3}\times \dfrac{12}{-5}\right)+\left(\dfrac{3}{7}\times \dfrac{21}{15}\right)$$

A

$$\dfrac{19}{5}$$

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Solution

Verified by Toppr

Correct option is A. $$\dfrac{19}{5}$$

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Similar Questions

Q1

Simplify:
$$\left(\dfrac{-4}{3}\times \dfrac{12}{-5}\right)+\left(\dfrac{3}{7}\times \dfrac{21}{15}\right)$$

View Solution

Q2

Simplify:
(i)

\frac{1}{18} + \frac{1}{18}

(ii)

\frac{8}{15} + \frac{3}{15}

(iii)

\frac{7}{7} - \frac{5}{7}

(iv)

\frac{1}{22} + \frac{21}{22}

(v)

\frac{12}{15} - \frac{7}{15}

(vi)

\frac{5}{8} + \frac{3}{8}

(vii)

1 - \frac{2}{3} (1 = \frac{3}{3})

(viii)

\frac{1}{4} + \frac{0}{4}

(ix)

3 - \frac{12}{5}

View Solution

Q3

Simplify the following :
$$(i) 1 \dfrac{2}{3} + 2 \dfrac{1}{2} + \dfrac{3}{4}$$
$$(ii) 3 \dfrac{2}{9} + 2 \dfrac{1}{3} +2 \dfrac{7}{12}$$
$$(iii) \dfrac{7}{12} + \dfrac{8}{9} - \dfrac{5}{6}$$
$$(iv) 1 \dfrac{3}{25} + \dfrac{7}{20} - \dfrac{2}{5}$$
$$(v) 1 \dfrac{13}{14} - 2 \dfrac{5}{6} + 1\dfrac{6}{7}$$

View Solution

Q4

Simplify

\frac{5}{3} + \frac{4}{7} \div \frac{32}{21}

View Solution

Q5

Simplify :

\frac{1}{2} - \frac{5}{7} + \frac{3}{9} \div \frac{21}{16} \times \frac{8}{12}

View Solution