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2,2*2=4,4cm- różnica w dwóch bokach
54-4,4=49,6
49,6:4=12,4
1 bok- 12,4
2bok- 12,4+2,2= 14,6
x=y+2,2
54 = 2y + 4,4+2y
4y = 49,6
y = 12,4
x = 14,6
a-b=2,2
a=(54-2b):2
a=2,2+b
27-b=2,2+b
24,8=2b
b=12,4
a=2,2+12,4=14,6