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Solve for x and y 7x - 3y = 4 and -10x + 3y = 2 A. x = -2, y = -6 B. x = 6, y = -2 C. x = 2, y = -6 D. x = 6, y = 2
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41 votes
41 votes
Solve for x and y

7x - 3y = 4 and -10x + 3y = 2

A. x = -2, y = -6
B. x = 6, y = -2
C. x = 2, y = -6
D. x = 6, y = 2

User Luca Manzo
by
2.9k points

1 Answer

14 votes
14 votes
You can use elimination
7x - 3y = 4
-10x + 3y = 2
Add both equations
-3x = 6, x = -2
Plug in -2 for x in one equation
7(-2) - 3y = 4
-14 - 3y = 4
-3y = 18, y = -6
Solution: x = -2, y = -6
User Nettux
by
3.3k points
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