Answer:
Step-by-step explanation:
y = 1 - x.....so sub 1 - x in for y back into the other equation and solve for x
5x + 4y = 1
5x + 4(1 - x) = 1
5x + 4 - 4x = 1
x + 4 = 1
x = 1 - 4
x = -3
y = 1 - x
y = 1 - (-3)
y = 1 + 3
y = 4
solution : x = -3 and y = 4 or (-3,4)
