alisonlebron15
18.07.2019 •
Mathematics
The sum of x and y is 12. when y is subtracted from 3x the result is 16. what is value of x and y?
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Ответ:
3x -y = 16 Add these two equations together.
4x = 28 Divide by 4
x = 28/4
x = 7
x + y = 12
7 + y = 12 Subtract 7 from both sides.
y= 12 - 7
y = 5
The solution set is (7,5)
Ответ:
Y= 5
3 · 7 - 5 = 16
5 + 7 = 12
Ответ:
Step-by-step explanation: