Question

verify that x minus y is a rational number when x = -3/7 y=-2/ 5​

Answer 1

Step-by-step explanation:

given

1. X=-3/7
2. Y=-2/5

proof

x-y=-3/7-2/5{given}

=-15/35-14/35

=-29/35

which is a rational number.

Answer 2

The correct answer is x-y = $\frac{-1}{35}$ which is a rational number.

Given: x = $\frac{-3}{7}$ and y = $\frac{-2}{5}$.

To Find: Verify that x-y is a rational number.

Solution:

x = $\frac{-3}{7}$ and y = $\frac{-2}{5}$.

x - y = $\frac{-3}{7}-(-\frac{-2}{5} )$

x - y = $\frac{2}{5}-\frac{3}{7}$

x - y = $\frac{14-15}{35}$

x - y = $\frac{-1}{35}$

A rational number is a number that is expressed as the ratio of two integers, where the denominator should not be equal to zero.

Hence, proved that x-y is rational number.

#SPJ2