Tìm x , biết :
134 - 2 { 156 - 2 . [ 54 - 2 .(9 + 6 ) ] } . x = 86
Tìm x, biết:
134 - 2 . {156 - 6[54 - 2(9 + 6)]} . x = 86
134 - 2 . {156 - 6[54 - 2(9 + 6)]} . x = 86
134 - 2 . { 156 - 6 [ 54 - 2 . 15 ) ] } . x = 86
134 - 2 . { 156 - 6 [ 54 - 30 ] } . x = 86
134 - 2 . { 156 - 6 . 24 } . x = 86
134 - 2 . { 156 - 144 } . x = 86
134 - 2 . 21 . x = 86
2 . 21 . x = 134 - 86
2 . 21 . x = 48
21 . x = 48 : 2
21 . x = 24
x = 24 : 21
x = 1
134-2.{156-6.[54-2.(9+6)]}.x=86
134-2.{156-6.[54-2.(9+6)]}.x=86
2.{156-6.[54-2.15]}.x=134-86
2.{156-6.[54-30]}.x=48
2.{[156-6.24]}.x=48
2.{[156-144]}.x=48
2.{12}.x=48
24.x=48
x=48:24
x=2
Vậy x=2
Chúc bn học tốt
134-2×{156-6×[54-2×(9+6)]}×x=86
134-2.{156-6.[54-2.(9+6)]}.x=86
TÌm x:
134-2.{ 156-6.[54-2.(9+6)] }.x=86
giúp mình 2h nộp rùi,huhu
134 - 2.{ 156 - 6 .[ 54 - 2 .( 9 + 6 )]} . x = 86
134 - 2.{ 156 - 6 .[ 54 - 2 . 15 ]} . x = 86
134 - 2.{ 156 - 6 .[ 54 - 30 ]} . x= 86
134 - 2.{ 156 - 6 . 24 } . x = 86
134 - 2.{ 156 - 144 } . x = 86
134 - 2 . 12 . x = 86
134 - 24 . x = 86
24 . x = 134 - 86
24 . x = 48
x = 48 : 24
x = 2
134-2.{156-6.[54-2.(9+6)]}.x=86
134-2.{156-6.[54-2.(9+6)]}.x=86
<=>134-2.{156-6.[54-2.15]}.x=86
<=>134-2.{156-6.24}.x=86
<=>134-2.12.x=86
<=>134-24.x=86
<=>24.x=134-86
<=>24.x=48
<=>x=48:24
<=>x=2
Vậy...
k mik nhé
Thanks
tìm x, biết :
\(134-2\left\{156-6\left[54-2\left(9+6\right)\right]\right\}.x=86\)
ko viết lại đề
=> \(2x\left\{156-6\left[54-2.15\right]\right\}=134-86\)
=> \(2x\left\{156-6\left[54-30\right]\right\}=48\)
=> \(2x\left\{156-6.24\right\}=48\)
=> \(2x\left\{156-144\right\}=48\)
=> \(2x.12=48\)
=> \(24x=48\)
=> \(x=48:24=2\)
Vậy \(x\in\left\{2\right\}\)
42 -(2x +32) +12 :2 =6
134 - 2 . {156 - 6.[54 -2.(9+6) ] } x=86
42 -(2x + 32) + 12 :2 =6
42 - 2x - 32 + 6 = 6
42 - 2x - 32 = 0
42 - 2x = 32
2x = 42 - 32 = 10
x = 5
134 - 2 . {156 - 6.[54 -2.(9+6) ] } x = 86
134 - 2.{ 156 - 6.[54 - 2 . 15 ]} x = 86
134 - 2.{ 156 - 6 . 24} x = 86
134 - 2. 12 .x = 86
134 - 24x = 86
24x = 48
x = 2
\(42-\left(2x+32\right)+12:2=6\)
\(\Rightarrow42-2x-32=0\)
\(\Rightarrow2x=10\)
\(\Rightarrow x=5\)
thực hiện phép tính
a)120:{50.50:[450-(4.125-4.25 )]}
tìm x biết
a) (2.x-4).(48-12.x)=0
b)134-2.{156-6[54-2 .(9+6)]}.x=86
a) 120:{50.50:[450 - (4.125 - 4.25)]}
= 120:{50.50:[450 - (4.25.5 - 4.25)]}
= 120:{50.50:[450 - (4.25(5 - 1))]}
= 120:{50.50:[450 - (100.4)]}
= 120:{50.50:[450 - 400]}
= 120:{50.50:50}
= 120:50
= 12/5
a) (2x - 4)(48 - 12x) = 0
=> 2(x - 2).12(4 - x) = 0
=> (x - 2)(4 - x) = 0 (2 và 12 khác 0)
=> x - 2 = 0 hay 4 - x = 0
=> x = 2 I => x = 4
b) 134 - 2{156 - 6[54 - 2(9 + 6)]}x = 86
=> 134 - 2{156 - 6[54 - 2.15]}x = 86
=> 134 - 2{156 - 6[54 - 30]}x = 86
=> 134 - 2{156 - 6.24}x = 86
=> 134 - 2{12.13 - 12.2.6}x = 86
=> 134 - 2{12[13 - 2.6]}x = 86
=> 134 - 2{12[13 - 12]}x = 86
=> 134 - 2{12.1}x = 86
=> 134 - 2.12x = 86
=> 134 - 24x = 86
=> 24x = 48
=> x = 2