12. Find (r + y) = (x - y), if13. Evaluate (x + y) * (ty), if x = and

1.	12. Find (r + y) = (x - y), if13. Evaluate (x + y) * (ty), if x = and y=
Answer» 12)x=2/3 ; y= –1/4(x+y)=2/3+(-1/4)=2/3-1/4=5/12x+y= 5/12 ✔x-y=2/3-(-1/4)=2/3+1/4=11/12x-y=11/12✔ therefore (x+y)÷(x-y)=(5/12)÷(11/12)=(5×12)/(12×11)=5/11✔✔or(x+y)÷(x-y)(2/3-1/4)÷(2/3+1/4)=5/11 (2)x=–2/5 ; y=3/4(x÷y)= -(2/5)÷(3/4)=-(2×4)/(5×3)=–8/15✔xy=–2/5 × 3/4=–6/20=–3/10✔ therefore (x÷y) × XY=(–8/15 )× (–3/10)=4/25✔ or(x÷y)× xy(-2/5÷3/4)× (-2/5)×3/4=4/25

12. Find (r + y) = (x - y), if13. Evaluate (x + y) * (ty), if x = and y=

Answer»

12)x=2/3 ; y= –1/4(x+y)=2/3+(-1/4)=2/3-1/4=5/12x+y= 5/12 ✔x-y=2/3-(-1/4)=2/3+1/4=11/12x-y=11/12✔

therefore (x+y)÷(x-y)=(5/12)÷(11/12)=(5×12)/(12×11)=5/11✔✔or(x+y)÷(x-y)(2/3-1/4)÷(2/3+1/4)=5/11

(2)x=–2/5 ; y=3/4(x÷y)= -(2/5)÷(3/4)=-(2×4)/(5×3)=–8/15✔xy=–2/5 × 3/4=–6/20=–3/10✔

therefore (x÷y) × XY=(–8/15 )× (–3/10)=4/25✔

or(x÷y)× xy(-2/5÷3/4)× (-2/5)×3/4=4/25