Question

5x plus 4 y minus 4 equal to 0 and x minus 20 equal to 12y . simultaneous linear equation​

Answer 1

5x + 4y - 4 = 0 , 5x + 4y = 4 ----1

x - 20 = 12y , x - 12y = 20 ---2

multiply equation 1st by 3

15x + 12y = 12 --------3

Adding equation 1st and 2nd

15x + 12y = 12

x - 12y = 20

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16x = 32

X = 2

put , X = 2 in equation 2nd

2 - 12y = 20

- 12y = 18

y = - 3/2

the solution of given linear equation is x = 2 and y = - 3/2 .