Question

2x + 3y=4 , 3x-4y=23 by elimination method ​

Answer 1

Answer:

x = 5

y = -2

Step-by-step explanation:

2x + 3y = 4 ---------------eq.(i)

3x - 4y = 23 --------------eq.(ii)

Multiply eq.(i) by 4

8x + 12y = 16 -------------eq.(iii)

Multiply eq.(ii) by 3

9x - 12y = 69 --------------eq.(iv)

On adding eq.(iii) to eq.(iv)

8x + 12y = 16

9x - 12y = 69

_____________

17x = 85

x = 85/17

x = 5

On putting the value of x = 5 in eq.(i)

2x + 3y = 4

2 * 5 + 3y = 4

10 + 3y = 4

3y = 4 - 10

3y = -6

y = -6/3

y = -2

I hope you understand it.