8x+5y=184 equ 1

x- y= 3 equ 2

from equ 2 make x the subject

x - y = 3

x= 3+y equ 3

subtittude equ 3 into equ 1

8(3 + y ) +5y = 184

24+8y+5y =184

collect like terms

8y + 5y = 184 - 24

13y = 160divide both sides by 13

therefor y = 12.3

subtitude y = 12.3 into equ 3

x = 3+y

x = 3 + 12.3

x=15.3

y = 12.3 while x = 15.3

x- y= 3 equ 2

from equ 2 make x the subject

x - y = 3

x= 3+y equ 3

subtittude equ 3 into equ 1

8(3 + y ) +5y = 184

24+8y+5y =184

collect like terms

8y + 5y = 184 - 24

13y = 160divide both sides by 13

therefor y = 12.3

subtitude y = 12.3 into equ 3

x = 3+y

x = 3 + 12.3

x=15.3

y = 12.3 while x = 15.3