`3^3 . 3^4 = 3^(3 + 4) = 3^7`
`7^5 : 7^2 = 7^(5 - 2) = 7^3`
`x . x^3 . x^5 = x^(1 + 3 + 5) = x^9`
`2^x . 2^(x - 2) . 2^2 = 2^x . 2^x : 2^2 . 2^2 = 2^x . 2^x = 2^(2x)`
`y^5 : y^3 = y^(5 - 3) = y^2`
`4^(y + 1) : 4 = 4^(y + 1 - 1) = 4^y`
`3^(x - 2) : 3^3 = 3^(x - 2 - 3) = 3^(x - 5)`
`5^(x - 3) . 5^5 = 5^(x - 3 + 5) = 5^(x + 2)`