X x 46 - X x 24 = 88 x 25
Tính Nhanh:
a) 3 x 7 x 9 / 7 x 5 x 3
b)6 x 8 x 11/ 16 x 24
c) 15 x 12 x 7/ 14 x 25 x 18
d) 118 x 13 - 13 x 18/ 79 + 21
e) 111 + 111 x 63 - 14 x 111
f) 126 - 27 + 74 - 73/ 21 x 11 + 39 x 21
G)146 x 21 + 146 - 46 x 22/ 88 x 25
56 x 33 = ? 46 x 32 = ?
88 x 88 = ? 67 x 43 = ?
97 x 45 = ? 30 x 15 = ?
56 x 33= 1848
88 x 88= 7744
97 x 45= 4365
46 x 33= 1518
67 x 43= 2881
30 x 15= 450
Tính nhanh:
12 x 23 + 23 x 88 / 46 x 3 + 46 x 14
\(\frac{12.23+23.88}{46.3+46.14}\)
\(=\frac{23.\left(12+88\right)}{46.\left(3+14\right)}\)
\(=\frac{23.100}{46.17}\)
\(=\frac{23.2.50}{23.2.17}\)
\(=\frac{50}{17}\)
\(\frac{12x23+23x88}{46x3+46x14}\)
=\(\frac{23x\left(12+88\right)}{46x\left(14+3\right)}\)
=\(\frac{23x100}{46x17}\)
= \(\frac{50}{17}\)
\(\frac{12\times23+23\times88}{46\times3+46\times14}\)
\(=\frac{23\times\left(12+88\right)}{46\times\left(14+3\right)}\)
\(=\frac{23\times100}{46\times17}=\frac{50}{17}\)
Ủng hộ tui nhé! ^.^
thực hiện phép tính sau ( tính hợp li nếu có thể )
a) ( -25 ) + 276 - (276 - 25)
b) 24 x 46 + 24 x 53 + 24
c) 145 + 20 - 45 + 180
d) 12 x 36 + 12 x 65 - 12
e) 3 x 5^2 + 15 x 2^2 - 1^2 x 3
f) 5 x 3^2 - 4 x 2^3 + 35 : 7
GIÚP VỚI Ạ
a, (-25) + 276 - (276 - 25)
= (-25) + 276 - 276 + 25
= [ (-25) + 25] - (276 - 276)
= 0 - 0
= 0
b, 24 x 46 + 24 x 53 + 24
= 24 x ( 46 + 53 + 1)
= 24 x 100
= 2400
c, 145 + 20 - 45 + 180
= (145 - 45) + (20 + 180)
= 100 + 200
= 300
d; 12 x 36 + 12 x 65 - 12
= 12 x ( 36 + 65 - 1)
= 12 x (100)
= 1200
Tính nhanh :
a/ 320 x 63 - 16 x 20 + 32 x 370
b/ 35 x 61 + 215 x 5 + 35 x 39 + 57 x 25
c/ 34 x 24 - 94 x 6 + 83 x 48 - 47 x 88
a) 320 x 63 - 16 x 20 + 32 x 370
= 320 x 63 - 320 x + 320 x 37
= 320 x ( 63 - 1 + 37 )
= 320 x 99
= 320 x ( 100 - 1 )
= 320 x 100 - 320
= 32000 - 320 = 31 680
b) 35 x 61 + 215 x 5 + 35 x 39 + 57 x 25
= 5 x 427 + 5 x 215 + 5 x 273 + 5 x 285
= 5 x ( 427 + 215 + 273 + 285 )
= 5 x 1200 = 6000
c) 34 x 24 - 94 x 6 + 83 x 48 - 47 x 88
= 204 x 4 - 4 x 141 + 996 x 4 - 1034 x 4
= 4 x ( 204 - 141 + 996 - 1034 )
= 4 x 25 = 100
Tính
36 x 4 50 x 3 22 x 6 35 x 4
......... ........... .......... ...........
......... ........... .......... ...........
......... ........... .......... ...........
46 : 2 96 : 3 60 : 3 88 : 4
......... ........... .......... ...........
......... ........... .......... ...........
......... ........... .......... ...........
36x4=144
50x3=150
22x6=132
35x4=140
46:2=23
96:3=32
60:3=20
88:4=22
b)8/25 nhân 46/24 -x=1/4
b, 8/25 x 46/24 - x = 1/4
46/75 - x = 1/4
x = 46/75 - 1/4
x = 109/300
\(\frac{8}{25}×\frac{46}{24}-x=\frac{1}{4} \)
\(\frac{46}{75}-x=\frac{1}{4}\)
\(x=\frac{46}{75}-\frac{1}{4}\)
\(x=\frac{109}{300}\)
vậy \(x=\frac{109}{300}\)
\(\frac{8}{25}.\frac{46}{24}-x=\frac{1}{4}\)
\(\frac{46}{75}-x=\frac{1}{4}\)
\(x=\frac{46}{75}-\frac{1}{4}\)
\(x=\frac{109}{300}\)
Học tốt
tìm x
a, x - 29/6 = 13/6 + 10/12
b, 15/26 + x(phần)13 = 46/25
c, 2,8 - x = 6/5 - 3/5
d, 24(phần)x : 8/3 = 0,6
a) x-29/6=13/6+10/12 b)15/26+x/13=46/25
x-29/6=3 x/13=46/25-15/26
x =3+29/6 x/13=821/650
x =47/6 x/650=821/650
x=821
c)2,8-x=6/5-3/5 d)24/x:8/3=0,6
2,8-x=2/5 24/x:8/3=3/5
14/5-x=2/5 24/x =3/5.8/3
x=14/5-2/5 24/x =8/5
x=12/5 24/x =24/15
x =15
a, x - 29/6 = 13/6 + 10/12
x - 29/6 = 26/12+10/12
x - 29/6 =3
x = 3 + 29/6
x = 47/6
vậy x = 47/6
b, 15/26 + x/13 = 46/25
x/13 = 46/25 - 15/26
x/13 = 821/650
x ko thỏa mãn
Tìm các số nguyên x,y biết:
a)\(\dfrac{6}{2x+1}=\dfrac{2}{7}\)
b) \(\dfrac{24}{7x-3}=\dfrac{-4}{25}\)
c) \(\dfrac{4}{x-6}=\dfrac{y}{24}=\dfrac{-12}{18}\)
d) \(\dfrac{-1}{5}\le\dfrac{x}{8}\le\dfrac{1}{4}\)
e) \(\dfrac{x+46}{20}=x\dfrac{2}{5}\)
f) \(y\dfrac{5}{y}=\dfrac{86}{y}\) ( \(x\dfrac{2}{5};y\dfrac{5}{y}\) là các hỗn số)
a,\(\dfrac{6}{2x+1}=\dfrac{2}{7}\)
⇒\(\dfrac{6}{2x+1}=\dfrac{6}{21}\)
⇒\(2x+1=21\)
\(2x=21-1\)
\(2x=20\)
⇒\(x=10\)