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1x6/3x2=1/2
100+10x+6/300+10x+2=1/2
mnożymy na skos
200 + 20x + 12 = 300 + 10x + 2
20x - 10x = 300 + 2 -200 -12
10x = 90 / 10
x = 9
Odp
196/392
b) 16/64 = 1/4
1x6/6x4 = 1/4
100 + 10x + 6/600 + 10x + 4 = 1/4
mnożymy na skos
400 + 40x + 24 = 600 + 10x + 4
40x - 10x = 600 +4 -400 -24
30x = 180
x = 6
Odp
166/664