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5 votes
Solve for x and y simultaneously 2 x + y =5 and 4 x + 3y =9​

User MSL
by
3.9k points

2 Answers

3 votes

Answer:

x = 3, y = - 1

Explanation:

2x + y = 5 → (1)

4x + 3y = 9 → (2)

Multiplying (1) by - 2 and adding to (2) will eliminate the x- term

- 4x - 2y = - 10 → (3)

Add (2) and (3) term by term to eliminate x

0 + y = - 1

y = - 1

Substitute y = - 1 into either of the 2 equations and solve for x

Substituting into (1)

2x - 1 = 5 ( add 1 to both sides )

2x = 6 ( divide both sides by 3 )

x = 3

User Sonida
by
4.5k points
5 votes

x=3

y=-1

I got my answer using process of elimination.

User Mescarra
by
4.7k points