Question

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Answer 1

Ответ:

$x + 3 = 2x + 5 \\ x = - 2 \\ \\ y = - 2 + 3 = 1$

(-2;1)

$2x + 4 = 5 - 3x \\ 5x = 1 \\ x = 0.2 \\ \\ y = 2 \times 0.2 + 4 = 4.4$

(0.2;4.4)

Answer 2

1) ( -2 ; 1 )

$y = x + 3 \\ y = 2x + 5$

$x + 3 = 2x + 5 \\ 2x - x = 3 - 5 \\ x = - 2$

$y = - 2 + 3 = 1$

2) ( 0,2 ; 4,4 )

$y = 2x + 4 \\ y = 5 - 3x$

$2x + 4 = 5 - 3x \\ 2x + 3x = 5 - 4 \\ 5x = 1 \\ x = 1 \div 5 \\ x = 0.2$

$y = 2 \times 0.2 + 4 = 0.4 + 4 = 4.4$