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X = 8 – 2y

x + 3y = 12

1 Answer

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Answer:

(x, y) = (0, 4)

Explanation:

Since we have an expression for x, substitution works nicely.

(8 -2y) +3y = 12 . . . . . . use the first equation to substitute for x in the 2nd

y = 4 . . . . . . . . . . . . subtract 8, collect terms

x = 8 -2(4) = 0 . . . . substitute for y in the first equation

The solution is (x, y) = (0, 4).

X = 8 – 2y x + 3y = 12-example-1
User MTroy
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