Solve, using linear combination.

5x + 2y =- 4
-3x +2y = 12

a (2, -7)

b (-2, 3)

c (4, 0)

d (0. -2)

Can someone me and do the problem plz so i can understand it more better

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

In angle pqr find the measure of