Question

3.
{5x-9y=7
{4x+6y=32
​

Answer 1

5x-9y=7
4х+6у=32 делим на 2

5х-9у=7
2х+3у=16. *3

5х-9у=7
6х+9у=48

11х=55
5х-9у=7

х=5
9у=18

х=5
у=2