Answer:
im guessing 15
Step-by-step explanation:
Gosh, when I saw that my mind went blank
8 thousands is equal to 8000.
15 hundreds is equal to 1500.
15 tens is equal to 150.
18 ones is equal to 18.
So just add them up.
8000 + 1500 = 9500.
9500 + 150 = 9650.
9650 + 18 = 9668.
The number is 9668
On the bottom left, the answer is subtraction property of equality because you need to subtract 4x to the 7x to simplify the equation.