Question

solve by elimination method: 117x + 231y = 579 & 231x + 117y = 465​

Answer 1

Answer:

x = 1, y = 2

Step-by-step explanation:

Answer 2

Answer:

x=1 and y=2

Step-by-step explanation:

117x+231y=579        (1)

231x+117y=465        (2)

subtracting equation (2) from (1)

117x+231y-231x-117y=579-465

114y-114x=114

y-x=1                       (a)

adding (1) and (2)

348x+348y=1044

x+y=3                     (b)

adding (a) and (b)

y-x+x+y=3+1

2y=4

y=2

substituting value of y in (b)

x+2=3

x=1