Question

Solve 7 + x - 15 = -2.

5
6
10
20

Answer 1

x = 6

Explanation:

7 + x - 15 = -2

= 7 - 15 = -(15 - 7)

= -8

= -8 + x = -2

= -8 + x + 8 = -2 + 8

= x = -2 + 8

= -2 + 8

= x = 6

Answer 2

x = 6

Explanation:

7 + x - 15 = -2

⇒ x-15 +7 = -2

⇒ x -8 = -2

add 8 on both sides

⇒ x= -2 +8

∴x = 6