3 years ago

PLS HURRY HAVE 10MIN. LEFT

Mathematics

1 answer:

Andre45 [30]3 years ago

7 0

Answer:

Step-by-step explanation:

Let the tenth digit is x and units digit is y.

<u>We have the following equations:</u>

y = x + 5
(x + y)*3 = 10x + y

<u>Simplify the second equation:</u>

3x + 3y = 10x + y
2y = 7x

<u>Solve by substitution:</u>

2(x + 5) = 7x
2x + 10 = 7x
7x - 2x = 10
5x = 10
x = 2

y = 2 + 5
y = 7

The number is 27

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