Solve the simultaneous equations
5x - 4y = 19
x + 2y = 8

x = 5, y = 3/2 ( or ) 1.5

Step-by-step explanation:

5x - 4y = 19 > equation 1

x + 2y = 8 > equation 2

2 ( x + 2y = 8 )

2x + 4y = 16 > equation 3

Add equations 1 and 3,

5x - 4y = 19

2x + 4y = 16

7x + 0  = 35

7x = 35

x = 35 / 7

x = 5

Substitute x = 5 in equation 2,

x + 2y = 8

5 + 2y = 8

2y = 8 - 5

2y = 3

y = 3 / 2

 ( or )

y = 1.5

x= 5 and y = 1.5

Step-by-step explanation:

5x -4y = 19

x + 2y = 8

let x = 8 - 2y...

5x - 4y = 19x = 8 -2y

5(8-2y) - 4y = 19

40 - 10y -4y= 19

40-14y = 19

-14y = 19-40

-14y = -21

y = 1.5

x = 8 - 2(1.5)

x = 8 - 3

x = 5

Thus, x is 5 and y is 1.5

Hope this helps

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