Question

Tìm x biết:

a) (x-12) - (2x+31) = -6-5

b) -2.(x+7) + 3.(x-2) = -2

c)-25 - (x+5) = 415 + 5.(x-83)

Các bạn giúp mk nha

Answer 1

c)

-25-x-5=415+5x-415

x-5x=-25-415-415+5

-4x=-20

x=5

k nhé

Answer 2

a)x-12-2x-31=-11

   x-2x-12-31=-11

   -1x=-11+31+12

    -x=33

Answer 3

b)-2x-14+3x-6=-2

   -2x+3x-14-6=-2

    x=-2+6+14

    x=18

Answer 4

cam on ban nhiu nha