Rozwiąż równania: a) 3a + 1 3/4 = 2 1/5 b) 1 2/3 - 5c = 1 1/4 c) 1/2p ; 1 3/4 = 8 pliska daje najjj na dzisiaj Dziękuję:)
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a)
3a+1i3/4=2i1/5
3a=2i1/5-1i3/4
3a=2i4/20-1i15/20
3a=9/20 /:3
a=9/20*1/3
a=9/60
a=3/20
b)
1i2/3-5c=1i1/4
-5c=1i1/4-1i2/3
-5c=1i3/12-1i8/12
-5c=-5/12 /:(-5)
c=-5/12*(-1/5)
c=5/60
c=1/12
c)
1/2p:1i3/4=8
1/2p:7/4=8
1/2p*4/7=8
4/14p=8 /*14/4
p=8*14/4
p=112/4
p=28