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Tema [17]
3 years ago
6

2x+y= 3

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

  5y = 5

Step-by-step explanation:

When the second equation is multiplied by -2, it becomes ...

  -2(x -2y) = -2(-1)

  -2x +4y = 2

Adding this to the first equation gives ...

  (2x +y) +(-2x +4y) = (3) +(2)

  2x +y -2x +4y = 5 . . . . . . . . . eliminate parentheses

  5y = 5 . . . . . . . . . . . . . . . . . . .collect terms

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