Question

2 x + 1 =(-7)+(+2)

Answer 1

  2 x + 1 =(-7)+(+2)

⇒ 2x + 1 = ( -9 )

⇒ 2x       = ( -9 ) - 1

⇒ 2x       = ( -10 )

⇒ x         =  ( -10 ) : 2

⇒  x        =  ( -5 )

Answer 2

2x+1=(-7)+(+2)

2x+1=(-5)

2x=(-5)-1

2x=(-6)

x=(-6):2

x=(-3)