crysssss
crysssss
06-04-2015
Mathematics
Answered
linear equation
4.5 + 1.5y=24
x-y=4
Answer :
Panoyin
Panoyin
06-04-2015
4.5x + 1.5y = 24 ⇒ 4.5x + 1.5y = 24
1.0x - 1.0y = 4 ⇒
4.5x - 4.5y = 18
6y
=
6
6 6
y = 1
4.5x + 1.5(1) = 24
4.5x + 1.5 = 24
- 1.5 - 1.5
4.5x
=
22.5
4.5 4.5
x = 5
(x, y) = (5, 1)
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