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2x + 2 = 23
2x + 2 = 8
2x = 8-2
2x =6
2x =(\(\sqrt{6}\)) 2
=> 2 = \(\sqrt{6}\)
34 * x =170
x = 170 / 34
x = 5
nhớ k nha
12 : x +5 = 3+ 5
12 : x +5 = 8
12: x = 8-5
12:x = 3
x = 12 :3
x= 4
5 x [ x + 19 ] = 170-50
5x [ x+ 19 ] = 120
x+ 19 = 120 : 5
x + 19 = 24
x = 24 -19
x = 5
1/2 . 1/3 . 1/4 . 1/5 . 1/6 . ( x - 1,010 ) = 1/360 - 1/720
1/2 . 1/3 . 1/4 . 1/5 . 1/6 . ( x - 1,010) = 1/720
( x - 1,010 ) . 1/2 . 1/3 . 1/4 . 1/5 . 1/6 = 1/720
( x - 1,010 ) . 1/720 = 1/720
x - 1,010 = 1/720 : 1/720
x - 1,010 = 1
x = 1 + 1,010
x = 2,01
a) 12 : x + 5 = 33
12 : x = 33 - 5
12 : x = 28
x = 12 : 28
x = 1/4
Vậy x = 1/4
b) 5*(x + 19) = 170 - 50
5*(x+19) = 120
x + 19 = 120 : 5
x + 19 = 24
x = 24 - 19
x = 5
Vậy x = 5
c) 11*(x - 6) - 11 = 4*x
11*(x-7) = 4x
11x - 77 = 4x
11x - 4x = 77
7x = 77
x = 11
Vậy x = 11
\(\dfrac{x-25-124}{2015}\) + \(\dfrac{x-124-2015}{25}\) + \(\dfrac{x-2015-25}{124}\) = 3
\(\dfrac{x-15-124}{2015}\) - 1 + \(\dfrac{x-124-2015}{25}\) - 1 + \(\dfrac{x-2015-25}{124}\) - 1 = 0
\(\dfrac{x-15-124-2015}{2015}\)+\(\dfrac{x-124-2015-25}{25}\)+\(\dfrac{x-2015-25-124}{124}\) = 0
\(\dfrac{x-\left(15+124+2015\right)}{2015}\)+\(\dfrac{x-\left(124+2015+25\right)}{25}\)+\(\dfrac{x-\left(2015+25+124\right)}{124}\) = 0
(\(x\) - 2164).(\(\dfrac{1}{2015}\)+\(\dfrac{1}{25}\)+\(\dfrac{1}{124}\)) = 0
\(x-2164\) = 0
\(x\) = 2164
\(x\times\frac{1}{5}+\frac{1}{5}\times x-x\times\frac{1}{5}=\frac{1}{5}\)
\(x\times\left(\frac{1}{5}+\frac{1}{5}-\frac{1}{5}\right)=\frac{1}{5}\)
\(x\times\frac{1}{5}=\frac{1}{5}\)
\(x=\frac{1}{5}:\frac{1}{5}\)
\(x=1\)
Vậy x = 1
ủng hộ mik nha các bn
chúc các bn giáng sinh vui vẻ
x × 1/5 + 1/5 × x − x × 1/5 = 1/5
x × (1/5 + 1/5 − 1/5) = 1/5
x × 1/5 = 1/5
x = 1/5 : 1/5
x = 1
Mery christmas