Question

Help dau coroanaaaaaa​

Answer 1

Răspuns:

Explicație pas cu pas:

-x + y = 4

5x + 2y = 8

y = 4 + x

5x + 2(4 + x) = 8

5x + 8 + 2x = 8

7x = 8 - 8 = 0

x = 0

y = 4

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-3x + 4y = -6

2x + y = 4

y = 4 - 2x

-3x + 4(4 - 2x) = -6

-3x + 16 - 8x = -6

-11x = -6 - 16 = -22

x = -22/-11 = 2

y = 4 - 4 = 0

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2x - 3y = -3

3x + y = 12

y = 12 - 3x

2x - 3(12 - 3x) = -3

2x - 36 + 9x = -3

11x = 36 - 3 = 33

x = 33/11 = 3

y = 12 - 9 = 3