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2014-03-10T10:07:22+02:00
X/6=y/4
x+y=60

4x=6y /:2
2x=3y
x=3y/2

3y/2+y=60
3y+2y=120
5y=120
y=24

x=3*24/2
x=3*12
x=36

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2014-03-10T11:06:39+02:00
X+y=60 x/6=y/4=x+y/6+4=60/10=6=> => x/6=6=> x=36 =>y/4=6=>y= 24 /=fractie