=>1000x=12000

hay x=12

x×125 + x×876 - x=12000

x × (125 + 876 - 1)=12000

x × 1000=12000

x=12000 : 1000

x=12

Vậy x=12

Xx125+Xx876-X=12000 
Xx125+Xx876-Xx1=12000 
Xx(125+876-1)=12000 
Xx(1001-1)=12000 
Xx1000=12000 
X =12000:1000 
X=12

tk nha bạn

thank you bạn

(^_^)

X x (125+876-1) = 12000

X x 1000            = 12000

X                        = 12000 : 1000

X                        = 12

Xx125+Xx876-X=12000 
Xx125+Xx876-Xx1=12000 
Xx(125+876-1)=12000 
Xx(1001-1)=12000 
Xx1000=12000 
X =12000:1000 
X=12

k cho mình nha!

\(125x+876x-x=12000\)

\(\Leftrightarrow125x+876x-1x=12000\)

\(\Leftrightarrow x\left(125+876-1\right)=12000\)

\(\Leftrightarrow1000x=12000\)

\(\Leftrightarrow x=12000\div1000\)

\(\Leftrightarrow x=12\)

\(\text{Vậy }x=12\)

4057+(X:38) = 20395

             X:38 = 20395-4057 

             X:38= 16338

                  X=16338 x 38

                  X= 620844

876 x 64 – 876 x 54 = 876 x ( 64 – 54) = 876 x 10 = 8760

876 x 64 – 876 x 54

= 876 x ( 64 – 54 )

= 876 x 10

= 8760

= 8760

876 x 64 – 876 x 54

= 876 x ( 64 – 54 )

= 876 x 10

= 8760

8760

8760

Ta có: X x 456 + X x 544 + X = 12000

          X x ( 456 + 544 + 1) = 12000

          X x 1001 = 12000

          X = 12000/1001

\(X\cdot456+X\cdot544+X=12000\)

\(X\cdot\left(456+544+1\right)=12000\)

\(X\cdot1001=12000\)

\(X=\frac{12000}{1001}\)

\(X=11\frac{989}{1001}\)

\(\cdot\)\(Là\)x (nhân) nha