Evaluate- 2113-1213-1219

(2113 1213)÷1219 =(21 1213)÷1219 =913÷1219 =913× reciprocal of 1219 =913×1912 =9× 1913× 12 =3× 1913× 4 =5752 ...

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Byju's Answer

Standard X

Mathematics

Quadratic Equations

Evaluate: 21...

Question

Evaluate:
$(\frac{21}{13} - \frac{12}{13}) \div \frac{12}{19}$

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Solution

We have, $(\frac{21}{13} - \frac{12}{13}) \div \frac{12}{19}$

$= (\frac{21 - 12}{13}) \div \frac{12}{19}$

$= \frac{9}{13} \div \frac{12}{19}$

$=913×reciprocal \,of1219$

$= \frac{9}{13} \times \frac{19}{12}$

$= \frac{9 \times 19}{13 \times 12}$

$= \frac{3 \times 19}{13 \times 4}$

$= \frac{57}{52} = 1 \frac{5}{52}$

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Similar questions

Q. Evaluate:

\frac{12}{13} + \frac{- 1}{12}

Fill in the blanks.

(i) $(\frac{- 3}{17}) + (\frac{- 12}{5}) = (\frac{- 12}{5}) + (. . . . .)$

(ii) $- 9 + \frac{- 21}{8} = (. . . . . .) + (- 9)$

(iii) $(\frac{- 8}{13} + \frac{3}{7}) + (\frac{- 13}{4}) = (. . . . . .) + [\frac{3}{7} + (\frac{- 13}{4})]$

(iv) $- 12 + (\frac{7}{12} + \frac{- 9}{11}) = (- 12 + \frac{7}{12}) + (. . . . .)$

(v) $\frac{19}{- 5} + (\frac{- 3}{11} + \frac{- 7}{8}) = {\frac{19}{- 5} + (. . . . .)} + \frac{- 7}{8}$

(vi) $\frac{- 16}{7} + . . . . . = . . . . . . + \frac{- 16}{7} = \frac{- 16}{7}$

Evaluate:

(+ 13) - (+ 12)

Evaluate each of the following: $(i) \frac{2}{3} - \frac{3}{5} (i i) \frac{- 4}{7} - \frac{2}{- 3} (i i i) \frac{4}{7} - \frac{- 5}{- 7} (i v) - 2 - \frac{5}{9} (v) \frac{- 3}{- 8} - \frac{- 2}{7} (v i) \frac{- 4}{13} - \frac{- 5}{26} (v i i) \frac{- 5}{14} - \frac{- 2}{7} (v i i i) \frac{13}{15} - \frac{12}{25} (i x) \frac{- 6}{13} - \frac{- 7}{13} (x) \frac{7}{24} - \frac{19}{36} (x i) \frac{5}{63} - \frac{- 8}{21}$

Q. Evaluate

\int \frac{dx}{x^{2} - x + 1}

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Evaluate:(2113−1213)÷1219

We have, (2113−1213)÷1219=(21−1213)÷1219=913÷1219=913×reciprocal \,of1219=913×1912=9×1913×12=3×1913×4=5752=1552

Evaluate:
$(\frac{21}{13} - \frac{12}{13}) \div \frac{12}{19}$