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x = ( 0,5 + 1/3 ) do drugiej
y = 2
x=1/2+1/3podzielic przez 2
x=3/6+2/3 :2
x=5/6:2=5/12
2.dane są liczby
x = ( 3 i 1/3 + 2,5 ) * 0,2
x=(10/3+5/2)*1/5=(20/6+15/6)*1/5=35/6*1/5=35/30=1⅙
y = 1,5 - 3/4 : 1,2
y=1,5-0,75:1,2=1,5-0,625=0,875
3.oblicz wrtosciwyrazenia
a) 2x+y
2x=y
y=2x
x=y/2
b) 3/5x - 0,4 y
3/5x=0,4y/0,6
x≈0,66y
0,4y=0,6x/0,4
y=1,5x
4. ( 3 i 1/2 + 1/4 ) + x = 7
(7/2+1/4)+x=7
(14/4+1/4)+x=7
15/4+x=7
x=7-3¾
x=3¼