(1×10,000)+(3×100)+(5×10)+(9× 10 1 )+(8× 100 1 ) as a decimal number.

Step-by-step explanation:

1. You have the following information given in the problem above:

2. To solve this exercise, first you must multiply the number that ar inside the parentheses and then you must add all of them, as you can see below:

3. Rewriting is as a decimal, you have that the answer is:

add 8+12 to get a simplified answer of 12r-20

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