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Rozwiąż równania:
a)-3x=7
b)2x=1/5
c)-(4+x)=2(3-x)
1/5-to ułamek
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a)-3x=7/ (-3)
x=-2,33
b) 2x=1/5 /2
x=2/5
c)-4-x=6-2x
-x+2x=4+6
x=10