Question

solve the following simultaneous linear equation: eqn1 x+2y = 1. eqn2 3x-y = 17

Answer 1

x +2y =1 -------1equation
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3x - y =17  -----2equation

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x+ 2y = 1      multiply by 1
3x-y   = 17     multiply by 2


  x + 2y =1
6x - 2y  = 34 
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7x = 35 
____________
x =35/7

x = 5 


Now,

Putting the value of x in 1equation,

x + 2y =1 

5 + 2y =1 

2y = 1-5

2y = -4

y = -4/2 

y =  -2

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x  = 5 

And y =  -2


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i hope this will help you



-by ABHAY

Answer 2

Hii friend,

X + 2Y = 1.........(1)

3X - Y = 17........(2)

FROM EQUATION (1) WE GET,

X + 2Y = 1

X = 1-2Y.......(3)

PUTTING THE VALUE OF X IN EQUATION (2)

3X - Y = 17

3 × (1-2Y) - Y = 17

3 - 6Y - Y = 17

-7Y = 17-3

-7Y = 14

Y = 14/-7 = -2

PUTTING THE VALUE OF Y IN EQUATION (3)

X = 1-2Y

= 1 - 2 × -2

= 1+4 = 5.

THEREFORE,

X = 5 AND Y = -2.

HOPE IT WILL GET YOU..... :-)