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y=tabliczki
z=lalki
6x=4y
6x=4y/6
x=4/6y
z=3x+3y
z=3*(4/6)y+3y
z=12/6y+3y
z=2y+3y
z=5y
2z+2y=?
2*5y+2y=?
12y=?
x=4/6y
x=4/6*12
x=48/6
x=8
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