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( 125 - 37 ) * 48 + 52 * ( 26 + 62 )
= 88 . 48 + 52 . 88
= 88 (48 + 52)
= 88 . 100
= 8800
\(\left(125-37\right).48+52.\left(25+62\right)\)
\(=88.48+52.88\)
\(=88\left(48+52\right)\)
\(=88.100\)
\(=8800\)
\(=\left(225-5^2\right)\cdot\left(225-6^2\right)\cdot...\cdot\left(225-225\right)=0\)
36 x 57 - 36 x 47 + 63 x 62 - 63 x 52
= 36 x ( 57 - 47 ) + 63 x ( 62 - 52 )
= 36 x 10 + 63 x 10
= 10 x ( 63 + 36 )
= 10 x 99
= 990
36x57—36x47+63x62—63x52
=36x(57—47)+63x(62—52)
=36x10+63x10
=10x(36+63)
=10x99
=990
Ta có: 62 : 4 . 3 + 2 . 52 = 36 : 4 . 3 + 2 . 25
= 9 . 3 + 2 . 25
= 27 + 50
= 77
(5346-2808) : 54 + 51
=2538 : 54 + 51
= 47 + 51 = 98
187 . ( 38 + 62 ) - 87 . (62 + 38 )
=187 . 100 - 87 . 100
= 100 . ( 187 - 87 )
= 100 . 100
= 10000
25. { 32 : [12 -4 + 4 . ( 16 : 8 )]}
= 25. { 32 : [12 - 4 + 8]}
= 25 . { 32 : [8 + 8 ]}
= 25 . { 32 : 16 }
= 25 . 2 =50
A = 50 +51 + 52 + ......+ 99+100
A = ( 100 + 50 ) . 51 : 2
A = 150 .51 : 2
A = 7650 : 2
A = 3825
Chuc ban hoc tot
\(\left(5346-2808\right):54+51\)
\(=2538:54+51\)
\(=47+51=98\)
\(187\left(38+62\right)-87\left(62+38\right)\)
\(=187.100-87.100\)
\(=100\left(187-87\right)\)
\(=100.100=10000\)
\(25\left\{32:\left[12-4+4\left(16:8\right)\right]\right\}\)
\(=25\left\{32:\left[12-4+4.2\right]\right\}\)
\(=25\left\{32:\left[12-4+8\right]\right\}\)
\(=25\left\{32:16\right\}\)
\(=25.2=50\)
\(A=50+51+52+......+100\)
\(=\dfrac{\left[\left(100-50\right):1+1\right]\left(100+50\right)}{2}\)
\(=3825\)
\(\left(x-52\right)-62=52\)
\(\Rightarrow x-52=52+62\)
\(\Rightarrow x-52=114\)
\(\Rightarrow x=114+52\)
\(\Rightarrow x=166\)
\(\left(x-52\right)-62=52\)
\(x-52=52+62\)
\(x-52=114\)
\(x=114+52\)
\(x=166\)
Vậy \(x=166\)
#Ayumu