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\(\left\{\left[\left(3^2+1\right).10-\left(8:2+6\right)\right]:2\right\}+55-\left(10:5\right)^3\)
\(=\left\{\left[\left(9+1\right).10-\left(4+6\right)\right]:2\right\}+55-2^3\)
\(=\left\{\left[10.10-10\right]:2\right\}+55-8\)
\(=\left\{\left[100-10\right]:2\right\}+47\)
\(=\left\{90:2\right\}+47\)
\(=45+47\)
\(=92\)
Vậy...
a, (19-51)-(x-23)=-6
19-51-x+23=-6
-32-x+23=-6
-32-x=-6-23
-32-x=-29
x=-32+(-29)
x=-61
-5x-10(-7)=55
-5x+70=55
-5x=55-70
-5x=-15
x=-15:(-5)
x=3
c, -7-2x=-37-(-26)
-7-2x=-37+26
-7-2x=11
-2x=11+7
-2x=18
x=-9
d, /2x-1/=/-5/
2x-1=5
2x=5+1
2x=6
x=6:2
x=3
e, 2-/x+5/=7
2-x+5=7
2-x=7-5
2-x=2
x=2-2
x=0
h, (x+8)2=25
(x+8)2=52
x+8=5
x=5-8
x=-3
f, (x+3)3:3-1=-10
(x+3)3:3=-10+1
(x+3)3:3=-9
(x+3)3:3=33
x+3:3=3
x+3=9
x=9-3
x=6
k mk nhe
Bài làm :
\(A.\left\{\left[\left(3^2+1\right).10-\left(8:2+6\right)\right]:2\right\}+55-\left(10:5\right)^3\)
\(=\left\{\left[10.10-\left(4+6\right)\right]:2\right\}+55-\left(10:5\right)^3\)
\(=\left[\left(100-10\right):2\right]+55-2^3\)
\(=\left(90:2\right)+55-8\)
\(=45+55-8\)
\(=92\)
\(B.\left\{\left[\left(10-2.3\right).5\right]+2-2.6\right\}:2+\left(4.5\right)^2\)
\(=\left\{\left[\left(10-6\right).5\right]+2-12\right\}:2+20^2\)
\(=\left[\left(4.5\right)+2-12\right]:2+400\)
\(=\left(20+2-12\right):2+400\)
\(=10:2+400\)
\(=5+400\)
\(=405\)
Học tốt nhé
a) {[(32 + 1).10 - (8:2 + 6)] : 2} + 55 - (10 : 5)3
= {[(9 + 1).10 - (4 + 6)] : 2} + 55 - 23
= {[10.10 - 10] : 2} + 55 - 23
= {[10(10 - 1)] : 2} + 55 - 8
= {[10.9] : 2} + 55 - 8
= 45 + 55 - 8 = 92
b) {[(10 - 2.3).5] + 2 - 2.6} : 2 + (4.5)2
= {[(10 - 6).5] + 2 - 12} : 2 + 202
= {[4 . 5] + 2 - 12} : 2 + 400
= {20 + 2 - 12} : 2 + 400
= 10 : 2 + 400 = 5 + 400 = 405
{ [ ( 32 + 1 ) . 10 - ( 8 : 2 + 6 ) ] : 2 } + 55 - ( 10 : 5 )
= { [ ( 9 + 1 ) . 10 - ( 8 : 2 + 6) ] : 2 } + 55 - ( 10 : 5 )
= { [ 10 . 10 - ( 8 : 2 + 6 ) ] : 2 } + 55 - ( 10: 5)
= { [ 10 . 10 - ( 4 + 6) ] : 2 } + 55 - (10 : 5)
= { [ 10 . 10 - 10 ] : 2 } + 55 - (10 : 5)
= { [ 10 .10 - 10 ] : 2 } + 55 - 2
= { [ 100 - 10 ] : 2 } + 55 - 2
= { 90 : 2 } + 55 - 2
= 45 + 55 - 2
= 100 - 2
= 98
{[(32 + 1).10 - (8:2 + 6)]:2} + 55
= {[( 9 + 1 ) . 10 - ( 4 + 6 )] : 2 } + 55
= [( 10 . 10 - 10 ) : 2 ] + 55
= [( 100 - 10 ) : 2 ] + 55
= ( 90 : 2 ) + 55
= 45 + 55 = 100
{ [ (32 + 1) .10 - (8 : 2 + 6) ] : 2 } + 55
= { [ 10 . 10 - 10 ] : 2 } + 55
= { 90 : 2 } + 55
= 45 + 55
= 100
a) {[( 32 + 1 ) . 10 - ( 8 : 2 + 6 ) ] : 2 } + 55 -( 10 : 5 )3
= ( 10 . 10 - 10 : 2 ) + 55 - 6
= 90 : 2 ) + 55 - 6
= 45 + 55 - 6
= 100 - 6
= 94
b) 100 - [ 60 - ( 9 - 2 )2 ] . 32
= 100 - [ 60 - 72 ] . 9
= 100 - [ 60 - 49 ] . 9
= 100 - 11 . 9
= 100 - 99
= 1
c) [ ( 1253 ) . 75 - ( 175 )5 : 5 ] : 20162017
= 0 : 20162017
= 0
+ bài d kg hiểu! Xin lỗi
[(32+1).10 - (8 : 2) +6] : 2 + 55 - 25= 81
81
k nha