Please answer fast , currently in tears i hate algebra

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Without multiplying, tell which product is larger and why. 5 × 1/3 or 5 × 2/3 a)5 × 1/3 because 1/3 is less than 2/3 b) 5 × 1/3 because 1/3 is greater than 2/3 c) 5 × 2/3 because 1/3 is less than 23 d) 5 × 23 because 1/3 is greater than 2/3

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5