What is the solution to 3x-y=4 and 2y+x=11

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asked Jul 6, 2017 211k views

1 Answer

Mlemay · Answer 1 · 2017-07-10T17:38:58+0000

3x - 1y = 4 ⇒ 9x - 3y = 12
1x + 3y = 11 ⇒ 1x + 3y = 11
10x = 23
10 10
x = 2.3
3x - y = 4
3(2.3) - y = 4
6.9 - y = 4
- 6.9 - 6.9
-y = -2.9
-1 -1
y = 2.9
(x, y) = (2.3, 6.9)

What is the solution to 3x-y=4 and 2y+x=11

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