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4 votes
3х + 8 = 15
2x — 8y = 10

User FMorschel
by
4.8k points

1 Answer

5 votes

Answer:

(x, y) = (5, 0)

Explanation:

Maybe you're trying to solve the system ...

  • 3x +8y = 15
  • 2x -8y = 10

It is convenient to add the two equations to eliminate the y-variable.

(3x +8y) +(2x -8y) = (15) +(10)

5x = 25 . . . . . . simplify

x = 5 . . . . . . . . divide by 5

Substituting into the first equation, we have ...

3(5) +8y = 15

8y = 0 . . . . . . . subtract 15

y = 0 . . . . . . . . divide by 8

The solution to the pair of equations we think you want to solve is ...

(x, y) = (5, 0)

3х + 8 = 15 2x — 8y = 10-example-1
User Viktoria
by
4.6k points