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2 years ago

the difference between a two-digit number and that number reversed is 18. What could that number be. List all possibility's.

Mathematics

2 answers:

kirza4 [7]2 years ago

3 0

9514 1404 393

Answer:

20, 31, 42, 53, 64, 75, 86, 97

Step-by-step explanation:

The difference of 18 means the difference of digits is 18/9 = 2. Since the number you seek is the larger number, the 10s digit will be 2 more than the 1s digit. Possible numbers are ...

20, 31, 42, 53, 64, 75, 86, 97

_____

If t and o are the tens and ones digits respectively, the relation you seek is ...

(10t +o) -(10o +t) = 18

9(t -o) = 18

t - o = 2 . . . . as above

Since both t and o must be single digits, the minimum will be t=2, o=0, and the maximum will be t=9, o=7.

Paraphin [41]2 years ago

3 0

Answer:

10a+b=10b+a-18

9a+9b = -18

9(a+b) = -18

a+b = 18/9

a + b =2

Step-by-step explanation:

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5-2(x+5)=3x-15 solve for X

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Answer:

x= 2

Step-by-step explanation:

5 -2(x +5)= 3x -15

Expand:

5 -2x -2(5)= 3x -15

5 -2x -10= 3x -15

Simplify:

-2x -5= 3x -15

Bring x terms to 1 side, constant to the other:

3x +2x= 15 -5

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Divide both sides by 5:

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Step-by-step explanation:

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