Given the vector a = (3, - 2) B = (- 2, - 1), C = (7, - 4), and C = λ a + μ B, what are the values of λ and μ

Given the vector a = (3, - 2) B = (- 2, - 1), C = (7, - 4), and C = λ a + μ B, what are the values of λ and μ

c=(3λ-2μ,-2λ-μ)=(7,-4)
3λ-2μ=7
2λ-μ=-4
- λ=15 λ=-15
μ=-37/2