If 3y − 2x = 12 and x/y = 3/4, find x and y

If (0.064)(0.4)^7=(0.4)^x(0.0256)^2, find (x⁻¹−1)/(x−1).

If 2ˣ × 3ʸ = 12 and 2ʸ × 3ˣ = 18, then the value of x + y is :

Find the value of x, if 3⁴ × 3ˣ = 3⁸:

If (0.04)² ÷ (0.008) × (0.2)⁶ = (0.2)ʸ, then find y.

If x^3 – y^3 = 117/8 and x – y = 3/2 then the value of x^2 + xy + y^2 will be