Question

solve the following pair of linear
equations by any suitable method
x + y = 5
2x - 3y = 5​

Answer 1

Answer:

x=4,y=1

Step-by-step explanation:

x+y=5×3

2x-3y=5

3x+3y=15

x=4

y=1

Answer 2

Answer:

x+ y = 5 ------------------equation (1)

2x - 3y = 5 -----------------equation (2)

equation 1 multiple by 2 both side, we get

2x + 2y = 5 -------------------equation (3)

Subtract equation (3) and (2)

2x + 2y = 5

-2x + 3y = 5

__________

0 +5y = 10

y = 10/-5

y = -2

Put equation 1 (y = -2)

x + y = 5

x+ -2 = 5

x -2 = 5

x = 5 + 2

x = 7

Answer x = 7 and y = -2

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