Thuc hien phep tinh
10-[120:3-2(132-117);2]
163-126:{150:3-320:[250-(120+15.6)
nhanh 9 tick giup ik mk can gap
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a. 407 - {[( -132+180):4+9]:3}
= 407 - {[ 48:4+9]:3}
= 407 - {[ 12+9]:3}
= 407 - { 21:3}
= 407 - 7
= 400.
a. 407-{[(-132+180):4+9]:3}
= 407-{[48:4+9]:3}
=407-{[12+9]:3}
=407-{21:3}
=407-7
=400
a) 248: {[( 368+232): 120-3]+122}+2011
=248:{[600:120-3]+122}+2011
=> 248:{ 2+122}+2011
=> 248: 124+2011
=> 2+2011
=> 2013
A, ( - 120 ) - 18 x ( - 5 + 6 )
= ( - 120 ) - 18 x 1
= ( - 120 ) - 18
= - 138
B, 465 + ( - 38 ) + ( - 465 ) + 10 + ( - 42 )
= 0 + ( - 38 ) + 10 + ( - 42 )
= ( - 80 ) + 10
= - 70
A = ( 54 + 65 + 31 ) + ( -72+-28) + 120
A = 150+-100 + 120
A = 50 + 120
A = 170
5/11+1/2+2/5+6/11+3/4+16/25+5/16
=1441/400
19/4+37/100+1/8+132/25+5/2+37/12
=1933/120
\(10-\left[120:3-2\left(132-117\right):2\right]\)
\(=10-\left[120:3-2.15:2\right]\)
\(=10-\left[40-30:2\right]\)
\(=10-\left[40-15\right]\)
\(=10-25\)
\(=-15\)
\(163-136:\left\{150:3-320:\left[250-\left(120+15.6\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-\left(120+90\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-210\right]\right\}\)
\(163-126:\left\{150:3-320:40\right\}\)
\(163-126:\left\{50-8\right\}\)
\(163-126:42\)
\(163-3\)
\(160\)
hok tốt