Physics tension and acceleration question?

Two packing crates of mes m1 = 10.0 kg and m2 = 7.00 kg are connected by a light string that pes over a frictionless pulley. The 7.00 kg crate lies on a smooth incline of angle 42.0� (like on the hypotenuse of a right triangle) (10 kg crate lies on the vertical side of the triangle.) Find the acceleration of the 7.00 kg crate and the tension on the string.