450+250
450+450+250
1150
ai muốn k thì k mình đã
ko k thì nhịn
(250-25):5: y=(450-60):130
\(\left(250-25\right):5:y=\left(450-60\right):130\)
\(\Leftrightarrow\)\(45:y=3\)
\(\Leftrightarrow\)\(y=45:3\)
\(\Leftrightarrow\)\(y=15\)
Chúc bạn học tốt ^^
100 : { 250 - [ 450 - ( 4 . 53 - 23 . 25 )]}
\(=100:\left[250-450+4\cdot125-8\cdot25\right]\\ =100:\left[-250+500-200\right]=100:50=2\)
Tính nhẩm:
310 + 40=
150 + 250 =
450 – 150=
Học sinh nhẩm và ghi kết quả như sau:
310 + 40=350
150 + 250 =400
450 – 150= 300
100 : { 250 [ 450 - ( 4.5^3 - 2^2 .25) ]} = ??
\(=100:\left\{250\left[450-\left(4\cdot125-4\cdot25\right)\right]\right\}\\ =100:\left[250\left(450-400\right)\right]\\ =100:\left(250\cdot50\right)=100:12500=12,5\)
100 : { 250 [ 450 - ( 4.5^3 - 2^2 .25) ]} = 12,5
=100:{250.[450-(4.125-4.25)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
{(250-25):15}:x=(450-60):130
{(250-25):15}:x=(450-60):130
{ 225 : 15 } : x = 390 : 130
15 : x = 3
x = 15 : 3
x = 5
Ủng hộ mk nhé
=>9225:15):x=390:130
=>15:x=3
=>x=15:3
=>x=5
chúc bn hok tốt nha
<=>[(250-25):15]:x=3
<=>225:15:x=3
<=>15:x=3
=>x =15:3
=> x =5
[(250 - 25) : 15 ] : x = ( 450 - 60 ) = 130
( 225 : 15 ) : x = 390 = 130
15 : x = 390 = 130
...........mk thấy đề bài sai bạn ạ
[(250 - 25 ) : 15 ] : x =130
[225 : 15 ] : x = 130
15 : x =130
x =15 : 130
x = 3 /26
100 : { 250 :[450- (4.53-22.25)]}
Nhanh giúp mik nha
\(100:\left\{250:\left[450-\left(4\cdot5^3-2^2\cdot25\right)\right]\right\}\)
\(=100:\left\{250:\left[450-\left(4\cdot125-4\cdot25\right)\right]\right\}\)
\(=100:\left\{250:\left[450-\left(500-100\right)\right]\right\}\)
\(=100:\left[250:\left(450-400\right)\right]\)
\(=100:\left(250:50\right)\)
\(=100:5\)
\(=20\)
100 : { 250 - [ 450 - ( 4 . 5 mũ 3 - 2 mũ 2 . 25 )]}