Question

3^x+2^y=985;3^x-2^y=473 find the value of x/y

Answer 1

Adding both the equations, we have

2×3^x = 985+473,

2×3^x = 1458,

then

3^x = 1458/2,

3^x = 729,

3^x = 3^6,

then

x=6