Question

Plzz solve this urgently .... Step by step explanation required too... DHANWAAD​

Answer 1

Answer:

Step-by-step explanation:

7ˣ+5^y = 74

let 7ˣ=a and 5^y =b

a+b=74

equation:2

7ˣ-1  - 5^y+1 =218

7ˣ x 7¹-5^y x 5¹=218

7a-5b=218

solve 1 and 2

1 x 7 = 7a + 7b = 518

2 x 1 = 7a -5b=218

subtract

12b=300

b=25

5ˣ=25

5ˣ=5²

x=2

now sub b in equation 1

a+25=74

a=74-25

a=49

7^y=49

7^y=7²

y=2