Question

40-x+4=-10

 

Answer 1

40-x+4=-10

=>x+4=40-(-10)

=>x+4=50

=>x=50-4

=>x=46

Answer 2

40-x+4=-10

40-x=-14

x=40-(-14)=54

Answer 3

Cách 1:
40 - x + 4 = -10
40 - x = -10 - 4
40 - x = -14
x = 40 - ( -14 )
x = 54

Answer 4

Cách 2:
40 - x + 4 = -10
40 - ( x - 4 ) = -10
x - 4 = 40 - ( -10 )
x - 4 = 50
x = 50 + 4
x = 54