Answer:
The missing number is 150
Step-by-step explanation:
45 + 5= ? -100
To carry out the problem we are going to call x to (?)
45 + 5= x -100
we see that we have a -100 of the second side of the equality, to get it out of there we can add 100 in both parts of the equality
45 + 5 + 100 = x -100 + 100
now we just solve and we have left
45 + 5 + 100 = x
As we see this is a common sum, by which we can already add it and obtain the value of x
150 = x
