A trader's ledger records a loss of $\frac{7}{4}$ thousand rupees in June and a profit of $\frac{13}{4}$ thousand rupees in July. What is the net result for the two months together?

**Addition / subtraction**: same denominator → add/subtract numerators. Different denominator → bring to common denominator first.

**Multiplication**: (p/q) × (r/s) = (p×r)/(q×s). Sign rule from integers applies (same → +, different → −).

**Division**: multiply by the reciprocal. (p/q) ÷ (r/s) = (p/q) × (s/r), provided r ≠ 0.

Nothing new compared to fractions — just keep track of signs.