Znajdź liczbę x: a) x + 4/5 = 1 1/2, b) x - 4/5 = 1 1/2, c) 5 4/9 + x = 7 1/2, d) x - 2 3/4 = 5 6/7, e) 8 1/12 - x = 5 1/4, f) 6 3/7 - x = 2 1/2
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x+4/5=1i1/2
x=3/2-4/5
x=6/4-4/5
x=30/20-16/20
x=14/20
x=7/10
b)
x-4/5=1i1/2
x=3/2+4/5
x=15/10+8/10
x=23/10
x=2i3/10
c)
5i4/9+x=7i1/2
x=15/2-49/9
x=135/18-98/18
x=37/18
x=2i1/18
d)
x-2i3/4=5i6/7
x=41/7+11/4
x=164/28+77/28
x=241/28
x=8i17/28
e)
8i1/12-x=5i1/4
-x=21/4-97/12
-x=63/12-97/12
-x=-34/12
-x=-2i10/12
-x=-2i5/6 /*(-1)
x=2i5/6
f)
6i3/7-x=2i1/2
-x=5/2-45/7
-x=35/14-90/14
-x=-55/14
-x=3i13/14 /*(-1)
x=3i13/14