x+y=9 and x-y =3 using substitution method
Answers
Answered by
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
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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