Question

a) 442 + (418 - x) = 860;

b) (210 - x) + 107 = 317

c) (x - 32) - 68 = 0

d) 274 - (x + 18) = 4

Answer 1

a, `442 + (418 - x) = 860`

` 418 - x = 860 - 442`

`418 - x = 418`

`x=418 - 418`

`x=0`

Vậy `x=0`

 

b, `(210 - x) + 107 = 317`

`(210 - x) = 317 - 107`

`210 - x = 210`

`x=210 - 210`

`x=0`

Vậy `x=0`

 

c, `(x - 32) - 68 = 0`

`(x - 32) = 0+68`

`x - 32= 68`

`x=68+32`

`x=100`

Vậy `x=100`

 

d, `274 - (x + 18) = 4`

`(x + 18) = 274 - 4`

`x+18=270`

`x=270-18`

`x=252`

Vậy `x=252`

Answer 2

a: =>418-x=418

=>x=0

b: =>210-x=210

=>x=0

c: =>x-100=0

=>x=100

d: =>x+18=270

=>x=252

Answer 3

`@` `\text {Ans}`

`\downarrow`

`a)`

`442 + (418 - x) = 860`

`=> 418 - x = 860 - 442`

`=> 418 - x = 418`

`=> x = 418 - 418`

`=> x = 0`

Vậy,` x=0`

`b)`

`(210 - x) + 107 = 317`

`=>210 - x = 317 - 107`

`=> 210 - x = 210`

`=> x = 210 - 210`

`=> x = 0`

Vậy, `x=0`

`c)`

`(x - 32) - 68 = 0`

`=> x - 32 = 68`

`=> x = 68 + 32`

`=> x = 100`

Vậy, `x=100`

`d)`

`274 - (x + 18) = 4`

`=> x + 18 = 274 - 4`

`=> x + 18 = 270`

`=> x = 270 - 18`

`=> x = 252`

Vậy, `x=252.`

Answer 4

`a)442+(418-x)=860`

`=>418-x=860-442`

`=>418-x=418`

`x=418-418`

`x=0`

Vậy `x=0`

`b)(210-x)+107=317`

`=>210-x=317-107`

`=>210-x=210`

`=>x=210-210`

`x=0`

Vậy `x=0`

`c)(x-32)-68=0`

`=>x-32=0+68`

`=>x-32=68`

`=>x=68+32`

`=>x=100`

Vậy `x=100`

`d)274-(x+18)=4`

`=>x+18=274-4`

`=>x+18=270`

`=>x=270-18`

`=>252`

Vậy `x=252`