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2a+2*0,6a=32
2a+1,2a=32
3,2a=32
a=10
b=6
Odp.Boki maja 10, 10, 6, 6cm
x-pierwszy bok
x-40%x-drugi bok
32=2x+2(x-40%x)
32=2x+2x-80%x
32=4x-0,8x
32=3,2x
x=10
x-40%x=10-4=6
0,6x - II bok
x+0,6x = 16
1,6x = 16
x = 10 - I bok
0,6*10 = 6 - II bok