Question

câu 1(9x+2).3 bằng 50

câu 2 (9x+5).4 bằng 200

 

Answer 1

giúp mình với nha chiều nộp rồi

Answer 2

câu 1:

\(\left(9x+2\right)\cdot3=50\)

\(\Leftrightarrow9x+2=\frac{50}{3}\)

\(\Leftrightarrow9x=\frac{44}{3}\)

\(\Leftrightarrow x=\frac{44}{27}\)

Câu2

\(\left(9x+5\right)\cdot4=200\)

\(\Leftrightarrow9x+5=50\)

\(\Leftrightarrow9x=45\)

\(\Leftrightarrow x=5\)

Answer 3

Câu 1 :\(\left(9x+2\right)3=50\)

\(\Rightarrow9x+2=\frac{50}{3}\)

\(\Rightarrow9x=\frac{50}{3}-2\)

\(\Rightarrow9x=\frac{44}{3}\)

\(\Rightarrow x=\frac{44}{3}:9\)

\(\Rightarrow x=\frac{44}{27}\)

Câu 2

\(\left(9x+5\right)4=200\)

\(\Rightarrow\left(9x+5\right)=\frac{200}{4}\)

\(\Rightarrow9x+5=50\)

\(\Rightarrow9x=50-5\)

\(\Rightarrow9x=45\)

\(\Rightarrow x=\frac{45}{9}\)

\(\Rightarrow x=5\)

 

Answer 4

1/ (9x+2).3 = 50

    (9x+2)     = 50 : 3

    (9x+2)     = \(\frac{50}{3}\)

     9x           = \(\frac{50}{3}\) - 2

     9x           = \(\frac{44}{3}\)

       x            = \(\frac{44}{3}\) : 9

       x            = \(\frac{44}{27}\)

2/ (9x+5).4 = 200

     (9x+5)    = 200 : 4

     (9x+5)    = 50

       9x         = 50 - 5

        9x        = 45

          x         = 45 : 9

          x         = 5

Answer 5

1) ( 9x + 2 ) . 3 = 50

=> 9x + 2 = 50 : 3

=> 9x + 2 = \(\frac{50}{3}\)

=> 9x = \(\frac{50}{3}\) - 2

=> 9x = \(\frac{44}{3}\)

=> x = \(\frac{44}{3}\) : 9

=> x = \(\frac{44}{27}\)

2) ( 9x + 5 ) . 4 = 200

=> 9x + 5 = 200 : 4

=> 9x + 5 = 50

=> 9x = 50 - 5

=> 9x = 45

=> x = 45 : 9

=> x = 5

Answer 6

\(\frac{44}{27}\)

Answer 7

2/ x =5

Answer 8

Câu 1:

44/37

Câu 2:

2/x=5