Operations On Rational Numbers — Maths STD 7 — Question
Maharashtra BoardEnglish MediumSTD 7MathsOperations On Rational Numbers3 Marks
Question
Add the following rational numbers:
$\frac{31}{-4}\text{ and }\frac{-5}{8}$
✓
Answer
$\frac{31}{-4}\text{ and }\frac{-5}{8}$
LCM of 4 and 8 is 4
$\frac{31}{-4}=\frac{31\times2}{-4\times2}=\frac{62}{-8}$
$\frac{31}{-4}+\frac{-5}{8}=\frac{62}{-8}+\frac{-5}{8}$
$=\frac{-62-5}{8}$
$=\frac{-67}{8}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.