a.x - 8 : 4 - (46 - 23 .2 + 6 . 3) = 0
b. 240 - (23 + (13+24.3-x)) = 132
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TH
9 tháng 10 2019
240-[23+(13+24.3-x)]=132
240-[23+(13+168-x)]=132
240-[23+(181-x)]=132
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x-8:4-(46-23.2+6.3)=0
9 tháng 10 2019
\(x-8:4-\left(46-23.2+6.3\right)=0\)
\(x-2-\left(46-46+18\right)=0\)
\(x-2-18=0\)
\(x-2=0+18\)
\(x-2=18\)
\(x=18+2\)
\(x=20\)
PT
1
24 tháng 9 2015
240 - [ 23 + ( 13 + 14 . 3 - x ) ] = 132
23 + ( 13 + 14 . 3 - x ) = 240 - 132
23 + ( 13 + 14 . 3 - x ) = 108
13 + 42 - x = 108 - 23
55 - x = 85
x = 85 - 55
x = 30
TA
2
13 tháng 7 2019
240 - [ 23 + ( 13 + 24 . 3 - x ) ] = 132
240 - [ 23 + 13 + 72 - x ] = 132
240 - 23 - 13 - 72 + x = 132
132 + x = 132
x = 132 - 132
x = 0
Vậy x = 0
=))
13 tháng 7 2019
\(240-\left[23+\left(13+24.3-x\right)\right]=132\)
\(23+\left(13+24.3-x\right)=240-132\)
\(23+\left(13+24.3-x\right)=108\)
\(13+24.3-x=108-23\)
\(13+24.3-x=85\)
\(24.3-x=85-13\)
\(24.3-x=72\)
\(72-x=72\)
\(x=72-72\)
\(x=0\)
4 tháng 6 2021
Giải;
1) \(347.222-222.\left(216+184\right):8\)
\(=347.222-222.400:8\)
\(=347.222-222.50\)
\(=222.\left(347-50\right)\)
\(=222.297\)
\(=65934\)
2) \(132-\left[116-\left(132-128\right).22\right]\)
\(=132-\left[116-4.22\right]\)
\(=132-\left[116-88\right]\)
\(=132-28\)
\(=104\)
3) \(16:\left\{400:\left[200-\left(37+46.3\right)\right]\right\}\)
\(=16:\left\{400:\left[200-\left(37+138\right)\right]\right\}\)
\(=16:\left\{400:\left[200-175\right]\right\}\)
\(=16:\left\{400:25\right\}\)
\(=16:16\)
\(=1\)
4) \(\left\{184:\left[96-124:31\right]-2\right\}.3651\)
\(=\left\{184:\left[96-4\right]-2\right\}.3651\)
\(=\left\{184:92-2\right\}.3651\)
\(=\left\{2-2\right\}.3651\)
\(=0.3651\)
\(=0\)
5) \(46-\left[\left(16+71.4\right):15\right]-2\)
\(=46-\left[\left(16+284\right):15\right]-2\)
\(=46-\left[300:15\right]-2\)
\(=46-20-2\)
\(=24\)
6) \(3^3.18+72.4^2-41.18\)
\(=18.\left(27-41\right)+72.16\)
\(=18.-14+1152\)
\(=-252+1152\)
\(=900\)
4 tháng 6 2021
Giải: (tiếp)
7) \(\left(56.46-25.23\right):23\)
\(=\left(2576-575\right):23\)
\(=2001:23\)
\(=87\)
8) \(\left(28.54+56.36\right):21:2\)
\(=\left(1512+2016\right):21:2\)
\(=3528:21:2\)
\(=84\)
9) \(\left(76.34-19.64\right):\left(38.9\right)\)
\(=\left(2584-1216\right):342\)
\(=1368:342\)
\(=4\)
10) \(\left(2+4+6+...+100\right).\left(36.333-108.111\right)\)
\(=\left(2+4+6+...+100\right).\left(11988-11988\right)\)
\(=\left(2+4+6+...+100\right).0\)
\(=0\)
11) \(\left(5.4^{11}-3.16^5\right):4^{10}\)
\(=5.4^{11}:4^{10}-3.16^5:4^{10}\)
\(=5.4-3.1\)
\(=20-3\)
\(=17\)
12) \(7256.4375-725:3650+4375.7255\)
\(=4375.\left(7256+7255\right)-\dfrac{29}{146}\)
\(=4375.14511-\dfrac{29}{146}\)
\(=63485624,8\)
Câu 12 ko chắc!
TD
5
