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seraphim [82]
3 years ago
6

9a+4b+4(-4a+2b)-7 What the answer

Mathematics
1 answer:
Harman [31]3 years ago
3 0
My work to your question.

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What is the simplest form of this expression –x3(3x+1)-2x4?
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The units pf the digits of a two digits numeral is 8 if the digits are reversed the new number is 18 greater than the oringal nu
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complete question:

The sum of the digits of a two-digit numeral is 8. If the digits are reversed, the new number is 18 greater than the original number. How do you find the original numeral?

Answer:

The original number is 10a + b  = 10 × 3 + 5  = 35

Step-by-step explanation:

Let

the number = ab

a occupies the tens place while b occupies the unit place. Therefore,

10a + b

The sum of the digits of two-digits numeral

a + b = 8..........(i)

If the digits are reversed. The reverse digit will be 10b + a. The new number is 18 greater than the original number.

Therefore,

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9b - 9a = 18

divide both sides by 9

b - a = 2...............(ii)

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b = 2 + a from equation (ii)

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Insert the value of a in equation(ii)

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Ending slavery and ending women sufferage
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