Question

2
Solve simultaneous equations. x+y=4,2x5y=1​

Answer 1

Answer:

x= 19/3, y= -7/3

Step-by-step explanation:

x+y=4___(1)

2x+5y=1___(2)

Multiplying equation (1) by 2

2x+2y=8___(3)

Subtracting (3) from (2)

2x+5y= 1

2x+2y= 8

(-) (-). (-)

________

3y = -7

y = -7/3

substituting y = -7/3 in (1)

x+ (-7/3) = 4

x - 7/3 = 4

x= 4 + 7/3

x= 19/3