Oblicz.
6,5 + ( 3 całe i 1/3 - 0,5 )
______________________ =
2 i 1/3
Znajdz niewiadomy składnik.
3/4 + 2/9 + x + 1 1/4 = 4
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6,5+(3⅓-½):2 1/3=6,5-(14/6+3/6):7/3=6,5-17/6*3/7=6,5-17/14=13/2-17/14=91/14-17/14=74/14=5 całych 4/14=5 całych i 2/7
3/4+2/9+x+1 1/4=4
3/4+2/9+x+5/4=4
2+2/9+x=4
2 całe 2/9 x=4
x=1,8