Question

Tìm X:

(X + 1) + (X + 2) + (X + 3) = 30

Answer 1

\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)=30\)

\(\left(x+x+x\right)+\left(1+2+3\right)=30\)

\(3x+6=30\)

\(3x=24\)

\(x=8\)

Answer 2

(X + 1) + (X + 2) + (X + 3) = 30

(X + X+ X) + (1 + 2 + 3) = 30

(X x 3) + 6 = 30

X x 3 = 30 - 6

X x 3 = 24

X = 24 : 3

X = 8

Answer 3

(X + 1) +(X+2) + (X+3) = 30

X+ 1 + X+2 +X+3=30

( X+X+X) + ( 1+2+3)= 30

X  x   3     +       6      = 30

X  x 3          = 30-6

X  x  3       = 24

         X  = 24 :3

             X= 8

Answer 4

\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)=30\)

\(< =>x+x+x+1+2+3=30\)

\(< =>3x+6=30\)

\(< =>3x=30-6=24\)

\(< =>x=\frac{24}{3}=8\)

Answer 5

Đáp số là 24

Answer 6

(x+1)+(x+2)+(x+3)=30

x+x+x+1+2+3=30

X . 3=30-1-2-3

X.3=24

x=24:3

x=8

Answer 7

\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)=30\)

\(\Leftrightarrow x+1+x+2+x+3=30\)

\(\Leftrightarrow3x+6=30\)

\(\Leftrightarrow3x=30-6\)

\(\Leftrightarrow3x=24\)

\(\Leftrightarrow x=8\)

Vậy\(x=8\)

Linz

Answer 8

 X x 3 + 1+ 2 + 3= 30

 X x 3 + 6            = 30

X x 3                     = 30 - 6

x * 3                       = 24

x                             = 24 : 3

x                              = 8

Nhớ k cho mik. Chúc bạn học tốt !

Answer 9

\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)=30\)

\(\Leftrightarrow x+1+x+2+x+3=30\)

\(\Leftrightarrow3x+6=30\)

\(\Leftrightarrow3x=24\)

\(\Leftrightarrow x=8\)

Vậy \(x=8\)

Answer 10

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

Answer 11

_{\(x ={8}\)}