Answer:
x = -7/2
y = -13/2
Step-by-step explanation:
Solve for y in the first equation.
y = 4 + 3x
Put y as 4 + 3x in the second equation and solve for x.
-9x + 5(4 + 3x) = -1
-9x + 20 + 15x = -1
6x + 20 = -1
6x = -21
x = -21/6
x = -7/2
Put x as -7/2 in the first equation and solve for y.
y = 4 + 3x
y = 4 + 3(-7/2)
y = 4 + -21/2
y = -13/2