Question

8x+5y=9;2y=-3x+4 solve the substitution method​

Answer 1

Answer:

X = -2/31

Y = 59/31

Step-by-step explanation:

8x+5y=9 -----> 1

2y=-3x+4

Y= (3x+4)/2

substitute this equation in 1

8 X + 5(3x +4)/2= 9

(16 X + 15 X+ 20) /2= 9

31 X = 2×9-20

31 X = 18-20

31 X = -2

X = -2/31

Y= (3x+4)/2

= (3(-2/31)+4)/2

= (-6+124)/62

= 118/62

= 59/31

X = -2/31

X = -2/31Y = 59/31