Question

Find the missing number. ___ + (-11) +111 = 130

Answer 1

Answer:

Let’s call missing number x:

1. Replace x with missing number:
X + (-11) + 111 = 130

2. Simplify
X - 11 + 111 = 130
X + 111 - 11 = 130
X + 100 = 130

3. Make 110 to the right side, without forgetting to change the sign:

X = 130 - 100
X = 30

So x (missing number) is equal to 20. Hope this helps!

Answer 2

+30

Explanation:

30-11=19

19+111=130