4 years ago

Using substitution 3x-5y=11 and x-3y=1

1 answer:

4 0

3x - 5y = 11 ⇒ 3x - 5y = 11
1x - 3y = 1 ⇒ 3x - 9y = 3 
 4y = 8
 4 4
 y = 2
 3x - 5(2) = 11
 3x - 10 = 11
 +10 +10
 3x = 21
 3 3
 x = 7
 (x, y) = (7, 2)

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3 years ago

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