Answer:
144
Step-by-step explanation:
We are given that
106 balls+_=250 balls
We have to find the unknown number of balls in model.
Let x be the unknown number of balls.
To find the unknown number of balls we will use subtraction property of equality.
Substitute the value
[tex]106+x=250[/tex]
This is the algebraic expression for this model
Using subtraction property of equality
Then, we get
[tex]x=250-106[/tex]
After simplification, we get
[tex]x=144[/tex]
Hence, the unknown number=144
