Answer :
1. -3, 9
The pattern is that you add 4 to the number before.
-7 + 4 = -3
-3 + 4 = 1
1 + 4 = 5
and so on...
The pattern is that you add 4 to the number before.
-7 + 4 = -3
-3 + 4 = 1
1 + 4 = 5
and so on...
Answer:
the missing terms are x, y
we have:
x + 7 = 4 => x = -3
13 - y = y - 5
<=> 2y = 18
<=> y = 9
so the missing terms are -3; 9