A variable needs to be eliminated to solve the system of equations below.
1 answer:
Answer:
The variable that needs to be eliminated in these systems of equations are 3x
Step-by-step explanation:
-3x + 4y = -50
3x + 3y = -6
*solve from top to bottom, if that makes sense, so add 3x to -3x, 4y to 3y, and -50 to -6.*
0 + 7y = -56
7y = -56
*divide by 7 to get y alone*
y = -8
plug y into one of the original equations to get x
-3x + 4y = -50
-3x + 4(-8) = -50
-3x - 32 = -50
+32 +32
-3x = -18
x = 6
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