Question

2х + Зу = 9
3х + 4 y = 5 using substituition method​

Answer 1

Answer:

2x+3y=9

x=9-3y/2____(1)

substitute (1) in 3x+4y=5

3(9-3y/2)+4y=5

(27-9y+8y)/2=5

27-9y+8y=5*2

27-y=18

27-18=y

9=y___(2)

substitute(2) in (1)

x=9-3y/2

x=9-3(9)/2

x=9-27/2

x= -18/2

x= -9

therefore, x= -9,y=9

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