Question

i. x - 3 = y and x + y = 15 =
$x - 3 = y and x + y = 15$
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Answer 1

x=9 and y=6

Explanation:

In this question we will apply elimination method of class 10th . In this we will solve both the equation then we will get the value of x and y

Answer 2

Answer:

x=9 ,y=6

Explanation:

x-3=y

=>x-y-3-------->(1)

x+y=15

=>x+y-15--------->(2)

•:(1)=(2)

x-y-3=x+y-15

=x-x-y-y= -15+3

= 0-2y= -12

= -2y=-12

= y=-12/-2

=>y=6

•: now, the value of 'y' put in equ (1) or equ(2)

equ(1). equ(2)

x-y-3. x+y-15

=x-3=y. =x+y=15

x=y+3. x=15-y

x=6+3. x=15-6

x=9. x=9

•: y=6 , x= 9