3x + 9y = -42 -3x + 2y = -2 To solve this system by elimination, blank the equations.
Mathematics · Middle School · Tue Nov 03 2020
llm
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Here, we have
3x + 9y = -42 ….(1)
-3x + 2y = -2 ….(2)
Using elimination method,
Adding equation 1 and 2, we get
3x + 9y - 3x + 2y = -42 - 2
11y = -44
y = -44/11
y = -4
Now, putting value of y in equation 2, we get
-3x + 2(-4) = -2
-3x -8 = -2
-3x = -2 + 8
-3x = 6
x = 6/-3
x = -2
Thus, value of x and y are -2 and -4 respectively.