tính
a) 47/4 – (41/6 – 9/2) + 5/3
b) 47/4 – (41/6 – 9/2 + 5/3 )
c) (91/2 – 19/8) – (35/6 + 27/4) + (32/3 – 45/8)
tính a) 47/4 – (41/6 – 9/2) + 5/3 b) 47/4 – (41/6 – 9/2 + 5/3 ) c) (91/2 – 19/8) – (35/6 + 27/4) + (32/3 – 45/8)
By Sarah
By Sarah
tính
a) 47/4 – (41/6 – 9/2) + 5/3
b) 47/4 – (41/6 – 9/2 + 5/3 )
c) (91/2 – 19/8) – (35/6 + 27/4) + (32/3 – 45/8)
a)47/4-(41/6-9/2)+5/3
=47/4-(41/6-27/6)+5/3
=47/4-14/6+5/3
=141/12-28/12+5/3
=113/12+5/3
=113/12+20/12
=133/12
b)47/4-(41/6-9/2+5/3)
=47/4-(41/6-27/6+10/6)
=47/4-(14/6+10/6)
=47/4-24/6
=113/12+48/12
=161/12
c)(91/2-19/8)-(35/6+27/4)+(32/3-45/8)
=(364/8-19/8)-(70/12+81/12)+(256/24-135/24)
=345/8-151/12+121/28
=1023/24-302/24-121/28
=721/24-121/28
=20188/672-2904/672
=17284/672
=4321/168
xin vote 5 sao+câu trả lời hay nhất+cảm ơn
`a)47/4-(41/6-9/2)+5/3 `
`=47/4-14/6+5/3`
` =(141-28+20)/12`
`=133/12`
` b)47/4-(41/6-9/2+5/3)`
`=47/4-(41-27+10)/6`
`=47/4-4`
`=47/4-16/4`
`=31/4`
`c)(91/2-19/8)-(35/6+27/4)+(32/3-45/8)`
`=91/2-19/8-35/6-27/4+32/3-45/8`
`=(91/2-35/6-27/4+32/3)+(-19/8-45/8)`
`=(546-70-81+128)/12-8`
`=(523)/12-8`
`=(523-96)/12`
`=427/12`