Question

Solve by any suitable method 3x+4y=25;5x-6y=-9

Answer 1

3x+4y=25 -(1)    *5

5x-6y=-9   -(2)  * 3

SUBTRACT (1) AND (2)

15x+20y= 125

15x-18y= -27

(-)    (+)     (+)

0x+38y=152

38y=152

y=152/38

y=4 -(3)

put (3) in (1)

3x+4y=25

3x+4(4)=25

3x+16=25

3x=9

x=3

therefore, x=3 and y=4

Answer 2

Here is ur answer...........