Answer:
x = 6
Step-by-step explanation:
7 + x - 15 = -2
⇒ x-15 +7 = -2
⇒ x -8 = -2
add 8 on both sides
⇒ x= -2 +8
∴x = 6
= 7 - 15 = -(15 - 7)
= -8
= -8 + x = -2
= -8 + x + 8 = -2 + 8
= x = -2 + 8
= -2 + 8
= x = 6
