potrzebne na teraz plis
a) 7x-14/0,7 - 3 =2(5-x) /*10
70x-14/7 -30=20(5-x)
30x=132
x=4,33
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a) 7x-14/0,7 - 3 =2(5-x) /*10
70x-14/7 -30=20(5-x)
30x=132
x=4,33