Question

10. (?) + (-18) = -6​

Answer 1

Answer:

(?) = 12

Step-by-step explanation:

Let us consider question mark (?) as x

x + (-18) = -6

=> x - 18 = -6

=> x = -6 + 18

=> x = 18-6

=> x = 12

To verify :-

(?) = 12

(?) + (-18) = -6

=> 12 + (-18) = -6

=> 12-18 = -6

=> -6 = -6

=> LHS = RHS

Hence verified

hope it helps.