krb2
krb2
10-02-2017
Mathematics
contestada
need to solve x and y
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afbc1028
afbc1028
10-02-2017
3x-4y=18
3x-y= 18/4 = 9/2
x-y = 9/2 / 3/1
x-y= 3/2
x = (3/2) + y
x+3y = -7
x+y= -7/3
x= (-7/3) -y
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Notoeis2
Notoeis2
10-02-2017
2. x= 2
y= -3
4. x= 8.5
y= 4.7
Answer Link
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