Question

solve the following sets of simultaneous equations. 2y-x=0;10x+15y=105​

Answer 1

Step-by-step explanation:

2y - x = 0---------(1)

15y + 10x = 105------(2)

Multiply with 5 in the 1st equation

10y - 10x = 0---------(3)

Add equation 2nd n 3rd

15y + 10x = 105

10y - 10x = 0

--------------------------

25y = 105

y = 105/25 = 4.2

Substitute the value of y in the equation 1

2y - x = 0

2×4.2 = x

x= 8.4

[x = 8.4

y = 4.2 ]

Answer 2

Answer:

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