Question

[Hatsune Miku]

Bài tập: Tìm x

a)  3 - ( -12 + 3 ) + x = x - ( -12 - 10 ) 

b)  2 - x = 14 - ( x + 4 )

c) x - 12 = 14 + ( 6 - x )

Answer 1

[Hoàng Hà Vy]

a.3-(-12+3)+x=x-(-12-10)

<=> 3+9+x=x+22

<=>x-x=22-3-9

<=> 0x=10

b,2-x=14-(x+4)

<=>2-x=14-x-4)

<=>x-x=14-4-2

<=>0x=8

c.x-12=14+(6-x)

<=>x-12=14+6-x

<=>x+x=14+6+12

<=>0x=32