briannachatman2
briannachatman2
09-09-2017
Mathematics
contestada
If x+y=2 and x-y=1 then:
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Аноним
Аноним
09-09-2017
x + y = 2
x - y = 1
Adding the equations,
x + y + x - y = 2 + 1
2x = 3
x = [tex] \frac{3}{2} [/tex]
x + y = 2
y = 2 - x
y = [tex] 2 - \frac{3}{2} = \frac{4-3}{2} = \frac{1}{2} [/tex]
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