Question

50 Points Each I know the answer: Solve by ELIMINATION

Answer 1

• 3x+y=-2
• -3x+2y=14

Add both

• 3y=12
• y=4

put in first one

• 3x+4=-2
• 3x=-6
• x=-2

Answer 2

• ( -2, 4)

Explanation:

We can see both equations have same variable 3x, one with positive and one with negative coefficient. If we add up the equations they will cancel, thus the variable x is eliminated.

Add up the equations and solve for y:

• y + 3x + 2y - 3x = -2 + 14
• 3y = 12
• y = 12/3
• y = 4

Now solve for x:

• 4 + 3x = -2
• 3x = -2 - 4
• 3x = -6
• x = -6/3
• x = -2