Answer:
x = 8
Step-by-step explanation:
The tape diagram is basically saying that the value of 15 + x is the same size (or is equal to) 23.
so, you can make the following equation:
15 + x = 23
subtract 15 from both sides of the equation
15 + x - 15 = 23 - 15
x = 23 - 15
x = 8
