Operations On Rational Numbers — Maths STD 7 — Question
Maharashtra BoardEnglish MediumSTD 7MathsOperations On Rational Numbers3 Marks
Question
Simplifiy:
$\frac{1}{-12}+\frac{2}{-15}$
✓
Answer
$\frac{1}{-12}+\frac{2}{-15}$
$\frac{1}{-12}+\frac{2}{-15}$
LCM of 12 and 15 is 60
$\frac{-1}{12}=\frac{-1\times5}{12\times5}=\frac{-5}{60}$
$\frac{-1}{12}=\frac{-2\times4}{15\times4}=\frac{-8}{60}$
$\frac{-1}{12}-\frac{2}{15}=\frac{-5}{60}+\frac{-8}{60}$
$=\frac{-5-8}{60}$
$=\frac{-13}{60}$
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