Question

By what no. should -65/18 divided to get - 13/2

Answer 1

9/5

65/18 divided by 9/5

65/18 multiply by 5/9 (reciprocal)

=13/2

So the real answer is 9/5

Answer 2

$(- 65 \div 18) \div x = - 13 \div 2 \\ x = (- 13 \times 18) \div (- 65 \times 2) \\ x = 9 \div 5$
= 9/5