Question

Find
(i) Find x + y
(ii) Find x - y
(iii) find 2x + 3y
(iv) Find x and y values​

Answer 1

Answer:

i) the value of x+y=6

Step-by-step explanation:

i) given that,

 $(3^{x} *7^{2y} )/(9^{3} *7^{5})=(1/63)$

⇒$3^{x-6}*7^{2y-5}= (1/2)*(1/21)$

⇒$(1/3^{6-x})*(1/7^{5-2y})=(1/3^{2})*(1/7)$

∴$6-x=2$  and $5-2y=1$

∴$x=4$  and $y=2$

∴$x+y=4+2=6$