Question

5X - 4Y + 6Z = 28
2X + 5Y - 7Z = 34
3X - 2Y + 5Z = 30

Answer 1

Explicación paso a paso:

a.

$5x - 4y + 6z = 28$

$5x + 2z = 28$

$5x = 58 - 2z$

$x = \frac{28}{5} - \frac{2}{5} z$

$5x = \frac{2}{5}z + \frac{28}{5}$

b.