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Please help as much as you can :)

Please help as much as you can :)-example-1
User Ajay Bhasy
by
6.0k points

1 Answer

5 votes

9514 1404 393

Answer:

(x, y) = (3, 7)

Explanation:

If you divide the second equation by 2, it becomes ...

-x +2y = 11

Adding this to the first equation gives you the value of y:

(x -y) +(-x +2y) = (-4) +(11)

y = 7 . . . . . . . . simplify

The first equation can be rearranged to give an expression for x:

x = y -4

x = 7 -4 = 3

Then the solution is seen to be (x, y) = (3, 7).

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Personally, I like a graphing calculator for a quick and easy solution to many linear systems. (If the solutions are non-integers, it may not be so helpful.)

Please help as much as you can :)-example-1
User Dmitry Isaev
by
6.5k points
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