Solve the systems of equations using substitution

y = -3x + 5

5x - 4y = -3

What does x = in this equation x+3+2x=x+5

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0