Question

Tìm số nguyên x, biết:

a) x - 73 = (57 - x) - 467

b) -(x - 3 - 84) = 70 - (-27) - 115

c) 231 - x + 62 = 46 + (x - 21)

d) -18 + x = -63 - (-33)

e) (x - 153) - (48 - 193) = 1 - 2 - 3 - 4

Answer 1

https://i.imgur.com/mU4U50u.jpg

Answer 2

a) x-73=(57-x)-467

<=>x+x=57+73-467

<=>2x=-337

<=>x=-337/2

vậy ....

b) -(x - 3 - 84) = 70 - (-27) - 115

<=> -x + 3 + 84 = 70 +27 - 115

<=>-x=-105

<=>x=105

vậy ...

c) 231 - x + 62 = 46 + (x - 21)

<=> - x = 46 + x - 21-231-62

<=>-2x=-268

<=> x=134

vậy ...

d) -18 + x = -63 - (-33)

<=>x=-63+33+18

<=>x=-12

vậy ...

e) (x - 153) - (48 - 193) = 1 - 2 - 3 - 4

<=>x - 153 - 48 +193 = 1 - 2 - 3 - 4

<=> x= 0

vậy ...