110+450+1000=
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1000 + 1000 + 120 + 110 + 900 + 130 = ( 1000 x 2 ) + ( 120 + 130 ) + ( 900 + 110 )
= 2000 + 250 + 1010
= 2250 + 1010
= 3260
Tính: 450 : 10 + 4500 : 100 + 45000 : 1000 = 45+45+45=135
ai k tui tui k lại
d, \(1000:\left\{250:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-\left(4.125-4.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-4.\left(125-25\right)\right]\right\}\)
\(=1000:\left[250:\left(450-400\right)\right]\)
\(=1000:\left(250:50\right)=1000:5=200\)
Chúc bạn học tốt!!!
Ta có : \(1000:\left\{250:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-\left(4.5^3-4.5^2\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-4.5^2\left(5-1\right)\right]\right\}\)
\(=1000:\left[250:\left(450-400\right)\right]\)
\(=1000:\left(250:50\right)\)
\(=1000:5=200\)
Chúc bạn học tốt ^^
1000 + 110 + 10 + 90
= ( 90 + 10 ) + ( 1000 + 110 )
= 100 + 1110 = 1210
\(a,\Leftrightarrow x+9=39\Leftrightarrow x=30\\ b,\Leftrightarrow73-x=69\Leftrightarrow x=4\\ c,\Leftrightarrow x+7=38\Leftrightarrow x=31\\ d,\Leftrightarrow x+4=178\Leftrightarrow x=174\\ e,\Leftrightarrow2\left(x-51\right)=16+20=36\Leftrightarrow x-51=18\Leftrightarrow x=69\\ f,\Leftrightarrow x-19=9\Leftrightarrow x=28\\ g,\Leftrightarrow4\left(x-3\right)=49-1=48\Leftrightarrow x-3=12\Leftrightarrow x=15\)
a) 45 - ( x + 9 ) = 6
45 - x = 6 + 9
45 - x = 15
x = 45 - 15
x = 30
b) 89 - ( 73 - x ) = 20
89 - x = 20 + 73
89 - x = 93
x = 93 - 89
x = 4
c) 198 - ( x + 4 ) = 120
198 - x = 120 + 4
198 - x = 124
x = 198 - 124
x = 74
d) ( x + 7 ) - 25 = 13
x - 25 = 13 + 7
x - 25 = 20
x = 20 + 25
x = 45
e) 2 ( x - 51 ) = 2.23 + 20
2 ( x - 51 ) = 64 + 20
2 ( x - 51 ) = 84
x - 51 = 84 - 2
x - 51 = 82
x = 82 + 51
x = 133
f) 450 : ( x - 19 ) = 50
450 : x = 50 - 19
450 : x = 41
x = 450 : 41
x = 24
=1560 nha bn