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4x + 3y = 24 and 4x - 3y = 12

1 Answer

10 votes

Answer:

(4.5, 2) (If you are looking for the point)

y = 2 (if you are looking for Y)

x = 4.5 or 18/4 (if you are looking for X)

Explanation:

4x + 3y = 24 and 4x - 3y = 12

Lets do the elimination method for this

4x + 3y = 24

4x - 3y = 12

minus the equations from each other and we get 6y = 12, divide both sides by 6 and we get y = 2

We insert 2 into the y's in one of the equations, most preferably the easiest one so we are going with the second one.

4x-3y=12, replace y with 2 and we get 4x-3(2)=12

simplify that equation and we get 4x-6=12, add 6 to both sides and we get 4x=18, divide both sides by 4 and we get x = 4.5 (or 18/4)

The answers are

y = 2 (if you are looking for Y)

x = 4.5 or 18/4 (if you are looking for X)

(4.5, 2) (If you are looking for the point)

User Alice Girard
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