Ինքնաստուգման օրինակ

Տարբերակ

1) 1. y = 0

2x — 0 + 2 = 0

2x + 2 = 0

2x = -2

x = -1

2. y = -6

2x + 6 + 2 = 0

2x + 8 = 0

2x = -8

x = -4

3. y = 14

2x — 14 + 2 = 0

2x — 12 = 0

2x = 12

x = 6

2) x = 2y

2x2y — 3y — 7 = 0

4y — 3y — 7 = 0

y = 7

x = 2 x 7

x = 14

3) -2y + 3 = 0

3y — 2 = 0

2y — 3 = 0

-3y + 2 = 0

-y = -1

y = -1

x = 2 x (-1) — 3

x = -5

4) x + y = 10

x — y = 4

x = 4 + y

4 + y + y = 10

y + y = 10 — 4

2y = 6

y = 3

x = 4 + 3

x = 7