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02-10-2016
Mathematics

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how to solve equations
3y-2x=11
y+2x=9

Respuesta :

princegn princegn

02-10-2016

3y-2x=11
y+2x=9
just plus them
4y = 20
y = 5
put y = 5 in y+2x=9
5 + 2x = 9
2x = 9 - 5
2x = 4
x = 2
thus x = 2
y = 5

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02-10-2016

1. y=9 and x=8
2. y=-29 and x=20

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