Question

5 raised to the power x minus 3 into 3 raise to the power 2y minus 7 is equal to 675 now find the value of x + Y

Answer 1

HEYA.......
here is Ur answer dear......

(5)^x-3 × (3)^2y-7= 675
(5)^x-3 × (3)^2y-7= (5)² × (3)³
By comparison..
(5)^x-3= (5)²
x-3=2
x=2+3
x=5....(1)

(3)^2y-7= (3)³
2y-7=3
2y=3+7
2y=10
y=5



So....x+y
5+5
= 10.....ans

Answer 2

Answer:

(5)^x-3 × (3)^2y-7= 675

(5)^x-3 × (3)^2y-7= (5)² × (3)³

By comparison..

(5)^x-3= (5)²

x-3=2

x=2+3

x=5....(1)

(3)^2y-7= (3)³

2y-7=3

2y=3+7

2y=10

y=5

So....x+y

5+5

= 10.....ans