Question

find (x+y) ÷(x-y) if x =5/2 y=-3/4
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Answer 1

Answer:

x+y=5/2-3/4=7/4

x-y=5/2+3/4=13/4

(x+y)/(x-y)=7/4*4/13=7/13

Answer 2

$x + y = \frac{5}{2} + ( \frac{ - 3}{4} )$

$\frac{5}{2 } - \frac{3}{4} = 10 - \frac{3}{4} = \frac{7}{4}$

$x - y = \frac{5}{2} - ( \frac{ - 3}{4} )$

$\frac{5}{2} + \frac{3}{4} = 10 + \frac{3}{4} = \frac{13}{4}$

$\frac{x + y}{x - y} = \frac{7 \div 4}{13 \div 4} = \frac{7}{13}$