Question

1)Oblicz
a)0,5-1/7=
b)1,3+1 1/3=
c)1,4*2 2/9=
d)4/5:0,1=

a)20/21-1/3=
b) 5/12+2 3/8=
c)25/3 * 9/35=
d)5/16:2 1/12=

a)5/6+(-0,75)=
b)3 1/25-0,44=
c)-5/6*(-2/4)=
d)-0,15:(-9/16)=

2)Rozwiaz rownania
a)-20:x=4
b)2x-1=10

Answer 1

A)0,5-1/7=1/2-1/7=7/14-2/14=5/14
b)1,3+1 1/3=1 3/10+1 1/3=13/10+4/3=39/30+40/30=79/30=2 19/30
c)1,4*2 2/9= 1 4/10* 2 2/9=14/10*20/9=14/1*2/9=28/9=3 1/9
d) 4/5:0,1=0,80*0,1= 8

a)20/21-1/3= 60/63-20/63=40/63
b)5/12+2 3/8=5/12+19/8=40/96+90/96=130/96=1 34/96=1 17/48

Więcej mi sie nie chce :D