Question

-7 - x = -13 - ( -26 )

 

Answer 1

     -7-x=-13-(-26)

⇒-7-x= (-13) +26

⇒-7-x=13

⇒-x=13+7

⇒-x=20

⇒x=20

 

Answer 2

\(-7-x=-13-\left(-26\right)\\ -7-x=13\\ x=-7-13\\ x=-20\)

(chú ý viết các dấu "=" thẳng nhau bạn nhé)

Answer 3

 -7-x=-13-(-26)

⇒-7-x= (-13) +26

⇒-7-x=13

⇒-x=13+7

⇒-x=20

⇒x=20

Answer 4

\(-7-x=-13-\left(-26\right)\)

\(-7-x=13\)

\(x=-7-13\\ x=-20\)