Math, asked by sudhanshukumar9958, 10 months ago

x+y=9 and x-y =3 using substitution method​

Answers

Answered by optimonium
2

Hey There:

We first want to determine which number we could remove.

Start by removing x, you could do this by eliminating the second equation, in this case x - y = 3.

Simply distribute negative one to both sides to be able to solve for y.

So,

-(x - y = 3)

-x + y = -3

Now, with our two equations, eliminate:

-x + y = -3

x + y = 9

y = 6

Plug back y to solve for x

x + 6 = 9

x = 3

Answer:

x = 3

y = 6

Answered by nagangouda1974
1

Answer:

X=6

y=3

Step-by-step explanation:

x-y=3

X=y+3...............1

X+y=9...............2

put equation 1 value in 2

y+3+y=9

2y+3=9

2y=6

y=3.................3

put equation 3 value in 1

x=3+3

X=6

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