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zhenek [66]
3 years ago
15

I need help with my math problem #6

Mathematics
1 answer:
Ksju [112]3 years ago
8 0

Givesn

Let P = 10x + y

Let Q = 10y + x


Solve

P - Q = 54 Substitute in for x and y

10x + y - 10y - x = 54

9x - 9y = 54 Divide the entire equation by 9

x - y = 6


Start by letting x = 9

9 - y = 6 Subtract 9 from both sides.

-y = 6 - 9

-y = - 3

y = 3


Therefore P is 93 <<<< Answer


Check

93 - 39 = 54 which checks.


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