arainier22 arainier22
  • 21-01-2020
  • Mathematics
contestada

What is 2 x = y + 10

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yloudermill
yloudermill yloudermill
  • 21-01-2020

Answer: x=6,y=4

Explanation:

x + y = 10 x − y = 2

Add both equations together.

x + x + y − y = 10 + 2

2 x = 12∣ : 2

x = 6

Sub the result into any of the two equations for x

6 + y = 10∣− 6

y = 4

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