\(460+85.4=\)\(\left(x+200\right).4\)

\(460+340=\left(x+200\right).4\)

     \(800\)      \(=\left(x+200\right).4\)

\(\Rightarrow\left(x+200\right).4=800\)

      \(\left(x+200\right)\) \(=800:4\)

        \(x+200\)     \(=200\)

       \(x\)                     \(=200-200\)

      \(x\)                      \(=0\)

Vậy x = 0

ta có 460+85.4=(x-200):4 

<->460+340=(x-200):4

<-> 800=(x-200):4

<->800.4=x-200

->x=3200+200=3400

=3000 mới đúng

Ta có: 460+85,4=(x-200):4

suy ra 460+340=(x-200):4

suy ra 800=9x-200):4

suy ra 800:4=x-200

suy ra x=3200+200=3400

3000 bạn nhé

a) 460 + 85 * 4 = ( x + 200 ) * 4

460 + 340 = ( x + 200 ) * 4

800 = ( x + 200 ) * 4

x + 200 = 200

x = 0

b) x + 5 * 2 - ( 32 + 16 * 3 : 16 - 15 ) = 0

x + 10 - ( 32 + 3 - 15 ) 0

x + 10 - 20 = 0

x - 10 = 0

x = 10

a) \(460+85.4=\left(x+200\right).4\)

\(\Rightarrow460+340=4x+800\)

\(\Rightarrow-4x=800-460-340\)

\(\Rightarrow-4x=0\)

\(\Rightarrow x=0\)

Vậy x = 0

b) \(x+5.2-\left(32+16.3:16-15\right)=0\)

\(\Rightarrow x+10-\left(32+3-15\right)=0\)

\(\Rightarrow x+10-20=0\)

\(\Rightarrow x-10=0\)

\(\Rightarrow x=10\)

Vậy x = 10

a, \(460+85.4=\left(x+200\right)4\)

\(460+340=\left(x+200\right)4\)

\(800=\left(x+200\right)4\)

\(\Leftrightarrow x+200=\frac{800}{4}\)

\(\Leftrightarrow x+200=200\)

\(\Rightarrow x=200-200\)

\(\Rightarrow x=0\)

Vậy \(x=0\)

dài quá ko làm nha!!!

a. 5(x+35)=515

=> x+35=515:5

=> x+35=103

=> x = 103-35

=> x = 68

b. (x+40).15=75.12

=>(x+40).15=900

=>x+40=900:15

=>x+40=60

=>x=60-40

=>x=20

c.460+85.4=(x+200):4

=>460+340=(x+200):4

=>800=(x+200):4

=>800.4=x+200

=>3200=x+200

=>x=3200-200

=>x=3000

5(x+35)=515

x+35=515/5

x+35=103

x=103-35

x=68

còn câu tính nhanh nữa giải dùm mình đi