Question

a) { -x - 4y = -5
{ 2x + 7y = 8
b) {x + y = 5
{3x + y =7
c) {3x - 2y = 5
{x + 2y = 15
d) {2x - x = 2
{3x - 2y = 3
e) {6 (x + y) = 5 - (2x + y)
{3x - 2y = -3x - 3

Answer 1

Ответ:

a)(-3;2)

b)(1;4)

c)(5;5)

d)(1;0)

e)$(-\frac{11}{58} ;\frac{27}{29} )$

Объяснение: