x- pewna liczba:
x/3 + x + 3 =163
1/3x+x=163-3
4/3x=160 /*3/4
x=120----- odp.
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x- pewna liczba:
x/3 + x + 3 =163
1/3x+x=163-3
4/3x=160 /*3/4
x=120----- odp.