Question

es sistema de ecuaciones​

Answer 1

Respuesta:

$2x - 2y = 4( - 3) \\ 6x + 3y = 5$

$- 6x + 6y = - 12 \\ 6x + 3y = 5$

$9y = 7 \\ y = 7 \div 9 \\ y = 0.77 \\ </p><p>2x - 2y = 4 \\ 2 x - 2(0.77) = 4 \\ 2x - 1.54 = 4 \\ 2x = 4 - 1.54 \\ 2x = 2.46 \\ x = 1.23$

2.

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

$- 15 - 6y = - 3 \\ - 6x + 6y = 10$

$- 21x = 7 \\ x = 21 \div 7 \\ x = 3$

$5x + 2y = 1 \\ 5(3) + 2y = 1 \\ 15 + 2y = 1 \\ 2y = 1 - 15 \\ 2y = 14 \\ y = 7$

3.