shanena50
contestada

Two two-digit numbers, 'AB' and 'BA', sum to
produce a three-digit number in which the second digit
is equal to A. The addition is represented below. (Note
that the variables are used to represent individual digits;
no multiplication is taking place).
AB + BA= 1A2
What is B?

Respuesta :

sqdancefan

9514 1404 393

Answer:

  9

Step-by-step explanation:

The value of the sum is ...

  (10A +B) +(10B +A) = 102 +10A

  11A +11B = 102 +10A

  A +11B = 102 . . . . . . . subtract 10A

Dividing by 11, we have ...

  A/11 +B = 9 3/11

This tells us A=3, B=9.

__

Check

39 + 93 = 132

kastinm8071

Answer:

To make this division work, you multiply the numerator by the reciprocal of the ... Therefore, ((x - 4) / (1 / 2)) / (1 / (x + 4)) = ((x - 4) * 2) * (x + 4) / 1. ... below. (Note that the variables are used to represent individual digits; no ... In the ten's column, we can see that a one must carry in order to get a digit in the hundred's place.

Step-by-step explanation:

Otras preguntas