96 - 3(x + 1) = 42
tìm x nhé
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(x+1)/99 + (x+2)/98 + (x+3)/97 + (x+4)/96 = -4
=> [(x+1)/99 +1] +[(x+2)/98+1]+[(x+3)/97+1]+[(x+4)/96+1] = 0
=>[(x+100)/99] + [(x+100)/98] +[(x+100)/97] + [(x+100)/96]=0
=>(x+100)(1/99+1/98+1/97+1/96)=0
=>x+100=0
=>x= -100
a) 96 - 3 (x - 1) = 42
3 (x - 1) = 96 - 42
3 (x -1) = 54
x - 1 = 54 : 3
x - 1 = 18
x = 18 + 1
x = 19
b) 12x - 33 = 32 . 33
12x - 33 = 35
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
Bạn nhớ kiểm tra lại nha dinh nguyen
96 - 3( x+ 1 ) = 42
3( x + 1 ) = 96 - 42
3( x + 1 ) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17
12x - 33 = 3 ^ 2 . 3 ^ 3
12x - 33 = 9 . 27
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
A = ( 1- 1/95 ) x ( 1 - 1/96 ) x ( 1-1/97 ) x ( 1-1/98 ) x ( 1 - 1/99 ) tính thuận tiện nhé giúp với
A = (1 - 1/95) . ( 1 - 1/96) . (1 - 1/97) . (1 - 1/98) . ( 1 - 1/99)
A = 94/95 . 95/96 . 96/97 . 97/98 . 98/99
A = \(\dfrac{94.95.96.97.98}{95.96.97.98.99}\)
A = 94/99
Vậy A = 94/99
- HokTot -
\(A=\left(1-\dfrac{1}{95}\right)\times\left(1-\dfrac{1}{96}\right)\times\left(1-\dfrac{1}{97}\right)\times\left(1-\dfrac{1}{98}\right)\times\left(1-\dfrac{1}{99}\right)\)
\(A=\dfrac{94}{95}\times\dfrac{95}{96}\times\dfrac{96}{97}\times\dfrac{97}{98}\times\dfrac{98}{99}\)
\(A=\dfrac{94\times95\times96\times97\times98}{95\times96\times97\times98\times99}\)
\(A=\dfrac{94}{99}\) (gạch bỏ những số giống nhau)
96 x 4,6 + 8,8 - 4,2 + 4,6 x 3
= 96 x 4,6 + 4,6 + 4,6 x 3
= 96 x 4,6 + 4,6 x 1 + 4,6 x 3
= 4,6 x (96 + 1 + 3)
= 4,6 x 100
= 460
30+{96-3.[54-2.(32+6)]}.x =79
30+{96-3.[54-2.15]}.x=79
30+{96-3.[54-30]}.x=79
30+{96-3.24}.x=79
30+{96-72}.x=79
30+24.x=79
24.x=79-30
24x=49
x=49/24
541+(218-x)=375
541+218-x=375
759-x=375
x=384
5 .(x+35)=515
x+35=103
x=68
10+2.x=4^5:4
10+2.x=256
2x=246
x=123
96-3.(x+1)=42
3(x+1)=54
x+1=18
x=17
=.= hok tốt!!
\(541+\left(218-x\right)=375.\)
\(\Leftrightarrow218-x=-166\)
\(\Leftrightarrow x=218-\left(-166\right)\)
\(\Leftrightarrow x=384\)
\(5.\left(x+35\right)=515\)
\(\Leftrightarrow x+35=103\)
\(\Leftrightarrow x=103-35\)
\(\Leftrightarrow x=68\)
\(10+2x=4^5:4\)
\(\Leftrightarrow10+2x=4^4\)
\(\Leftrightarrow10+2x=256\)
\(\Leftrightarrow2x=256-10\)
\(\Leftrightarrow2x=246\)
\(\Leftrightarrow x=123\)
\(96-3.\left(x+1\right)=42\)
\(\Leftrightarrow3.\left(x+1\right)=96-42\)
\(\Leftrightarrow3\left(x+1\right)=54\)
\(\Leftrightarrow x+1=54:3\)
\(\Leftrightarrow x+1=18\)
\(\Leftrightarrow x=17\)
\(\text{a/96-3(x+1)=42}\)
\(3\left(x+1\right)=54\)
\(x+1=54:3\)
\(x+1=18\)
\(\Rightarrow x=17\)
\(\text{b/2.x-18=20}\)
\(2x=38\)
\(x=38:2\)
\(x=19\)
\(\text{c/134-5.(x+4)=34}\)
\(5\left(x+4\right)=100\)
\(x+4=100:5\)
\(x+4=20\)
\(\Rightarrow x=16\)
học tốt
a) 96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=18
x=18-1
Vậy x=17
b) 2x-18=20
2x=20+18
2x=38
x=38:2
x=19
Vậy x=19.
c) 134-5(x+4)=34
5(x+4)=134-34
5(x+4)=100
x+4=100:5
x+4=20
x=20-4
x=16
Vậy x=16.
a) 96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=18
x=18-1
x=17
Vậy x=17
b)2.x-18=20
2.x =20+18
2.x =38
x =38:2
x =19
Vậy x=19
c)134-5.(x+4)=34
5.(x+4)=134-34
5.(x+4)=100
x+4 =100:5
x+4 =20
x =20-4
x =16
Vậy x=16
c) Từ 96 - 3(x + 1) = 42 suy ra 3(x + 1) = 96 - 42 = 54. Do đó x + 1 = 54 : 3 = 18. Vậy x = 18 - 1 hay x = 17
tk mk nhe thanks
x bằng 17 bạn