Question

Solve the following pair of linear equations for x and y: 3x – y – 7 = 0 and 2x + 5y + 1 = 0 The value of x is………. And value of y is ………. *

Answer 1

Answer:

x=2

y=-1

Explanation:

3x-y-7=0 - equation 1

2x+5y+1=0 - equation 2

3x-y-7 =0*2

2x+5y+1=0*3

6x-2y-14=0

6x+15y+3=0 subtract them

.°. -17y-17 =0

y = 17/-17

y= -1(put in equation 1)

3x -(-1)-7=0

3x+1-7=0

3x-6=0

3x=6

x=6/3

x=2

thank u

hope it helps you