1.) Solve the system by the substitution method y = 4x -3x + v = ] ; (5pts). https://www.youtube.com/watch?v=j_t73ghqVMw E 2.) Solve the system by the addition/elimination method x + 2y = 2 ; (5 pts). -4x + 3y = 25 https://www.youtube.com/watch?v=q1UOuV4iujk =>3.) a.) When solving the linear system 5x - 2y = 4 by the addition method, 0 = 15 is obtained; what does this mean for the -10x + 4y = 7 answer of the solution to the system? (2.5 pts). Ly = 3x - 5 b.) When solving the linear system 21x - 35 = 7y by the substitution method, 0 = 0 is obtained; what does this mean for the answer of the solution to the system? (2.5 pts). https://www.youtube.com/watch?v=bowGLatEx98 E