browndariel
06.05.2020 •
Mathematics
2x + 3y = 6
–5x+2y = 4
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Ответ:
y = 2
2x + 3y = 6
-5x + 2y = 4
Multiply the first equation by 2
(2x + 3y = 6)2 =
4x + 6y = 12
Then multiply the 2nd equation by -3
(-5x + 2y = 4)-3
That equals
15x - 6y = -12
Then add the two equations together
4x + 6y = 12
15x - 6y = -12
That equals
4x = 0
Balance
x = 0
Now let’s plug x into the first equation
2(0) + 3y = 6
That equals
3y = 6
Balance
y = 2
Ответ: