Question

1. Tìm x theo cách chuyển vế:

40: x+ 18 - (-2)= 10

Answer 1

40:x+18-(-2)=10

40:x+20 =10

40:x =10-20

40:x =-10

x =40:(-10)

x =-4

Answer 2

\(40:x+18-\left(-2\right)=10\\ \Leftrightarrow\dfrac{40}{x}+20=10\\ \Leftrightarrow\dfrac{40}{x}=-10\\ \Leftrightarrow x=40:\left(-10\right)=-4\)

Answer 3

40 : x + 18 - (-2) = 10

40 : x + 18 + 2 = 10

40 : x + 18 = 10 - 2

40 : x + 18 = 8

40 : x = 8 - 18

40 : x = -10

x = 40 : (-10)

x = -4