Question

1/3 + 2/3 : x= -7

1/3 x + 2/5.(x-1)=0

 

Answer 1

1/3 + 2/3 : x = -7

1 : x = -7

x = 1 : -7

x = -1/7

Answer 2

2/3 : x = -7 -1/3

2/3 : x = -22/3

x=2/3 :( -22/3 )

x=2/3 x (-3/22)

x=-1/11

Answer 3

1/3x + 2/5x - 2/5 = 0

1/3x + 2/5x = 0 + 2/5

1/3x + 2/5x =2/5

(1/3 + 2/5) x = 2/5

11/15x = 2/5

x = 2/5 : 11/15

x=6/11

Answer 4

--\(\frac{1}{3}+\frac{2}{3}.\frac{1}{x}=-7\)

=>\(\frac{2}{3x}=-7-\frac{1}{3}=\frac{-22}{3}\)

=>6=-66x => \(x=\frac{6}{-66}=\frac{-1}{11}\)

--\(\frac{1}{3}x+\frac{2}{5}x-\frac{2}{5}=0\)

=>\(x\left(\frac{1}{3}+\frac{2}{5}\right)=\frac{2}{5}\)

=>\(\frac{11}{15}x=\frac{2}{5}=>x=\frac{2}{5}:\frac{11}{15}=>x=\frac{7}{11}\)

Answer 5

duong hiệp nhớ nhé=7/11

Answer 6

\(\frac{1}{3}+\frac{2}{3}:x=-7\)

\(\frac{2}{3}:x=-7-\frac{1}{3}\)

\(\frac{2}{3}:x=-\frac{22}{3}\)

\(x=\frac{2}{3}:\left(-\frac{22}{3}\right)\)

\(x=-\frac{1}{11}\)