Oblicz:
a)
(3/4-0,25)x4,8=
b)
15i1/2:62/7+0,75=
c)
0,5:1/3+1,7=
d)
9/4x(1-0,2)=
znak / oznacza ułamek,pomóżcie!!!!
a) (3/4-0,25)·4,8=(3/4-1/4)·4,8=2/4·4,8=1/2·4,8=0,5·4,8=2,4
b) 15 1/2:62/7+0,75=31/2:62/7+0,75=31/2·7/62+0,75=7/4+3/4=10/4=2 1/2
c) 0,5:1/3+1,7=1/2·3/1+1,7=3/2+17/10=15/10+17/10=32/10=3 2/10=3 1/5
d) 9/4·(1-0,2)=9/4·0,8=9/4·8/10=18/10=1 8/10=1 4/5
a)(0,75-0,25) x 4,8= 0,5 x 4,8 = 2,4
b)tego nw ;)
c) 0,5x3+1,7= 3,2
d) 2,25 x 0,8 = 1,8
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a) (3/4-0,25)·4,8=(3/4-1/4)·4,8=2/4·4,8=1/2·4,8=0,5·4,8=2,4
b) 15 1/2:62/7+0,75=31/2:62/7+0,75=31/2·7/62+0,75=7/4+3/4=10/4=2 1/2
c) 0,5:1/3+1,7=1/2·3/1+1,7=3/2+17/10=15/10+17/10=32/10=3 2/10=3 1/5
d) 9/4·(1-0,2)=9/4·0,8=9/4·8/10=18/10=1 8/10=1 4/5
a)(0,75-0,25) x 4,8= 0,5 x 4,8 = 2,4
b)tego nw ;)
c) 0,5x3+1,7= 3,2
d) 2,25 x 0,8 = 1,8