Tìm x, giải chi tiết ra:1. [(2 x \(x\)+ 50) x 5 - 200] : 10 = 302. 36 - (1,5 x 26 : x) = 1,2 x 15 + 70 :53. (\(x\)- 140) : 35 = 2704. 460 + 85 x 4 = (\(x\)+ 200) : 45. 7,2 : 2,4 x \(x\)= 4,56. 2448 : [119 - (\(x\)- 6)] = 247. 156 - (\(x\)+ 61) = 828. (2958 + \(x\)) : 134 = 879. (5376 - \(x\)) - 3877 = 90410: 231 - (\(x\) - 6) = 1339 : 1311. 4 x \(x\)- [(8000 - 3576) - (2031 - 1598)] = 40012. \(x\)- 4867 = (175 x 2 + 50 x 70) : 25 + 2313. 420 : (\(x\): 39) = 10514. \(x\): (1001 : 13) =...
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Tìm x, giải chi tiết ra:
1. [(2 x \(x\)+ 50) x 5 - 200] : 10 = 30
2. 36 - (1,5 x 26 : x) = 1,2 x 15 + 70 :5
3. (\(x\)- 140) : 35 = 270
4. 460 + 85 x 4 = (\(x\)+ 200) : 4
5. 7,2 : 2,4 x \(x\)= 4,5
6. 2448 : [119 - (\(x\)- 6)] = 24
7. 156 - (\(x\)+ 61) = 82
8. (2958 + \(x\)) : 134 = 87
9. (5376 - \(x\)) - 3877 = 904
10: 231 - (\(x\) - 6) = 1339 : 13
11. 4 x \(x\)- [(8000 - 3576) - (2031 - 1598)] = 400
12. \(x\)- 4867 = (175 x 2 + 50 x 70) : 25 + 23
13. 420 : (\(x\): 39) = 105
14. \(x\): (1001 : 13) = 29
15. 70 - 5 x (\(x\)- 3) = 45
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15) 70 - 5 . ( x - 3 ) = 45
5 . ( x - 3 ) = 70 - 45
5 . ( x - 3 ) = 25
x - 3 = 25 : 5
x - 3 = 5
x = 5 + 3
x = 8
14 ) x : ( 1001 : 13 ) = 29
x : 77 = 29
x = 29 . 77
x = 2233
13 ) 420 : ( x : 39 ) = 105
x : 39 = 420 : 105
x : 39 = 4
x = 4 . 39
x = 156