Question

помогите плиз, алгебра​

Answer 1

1.y = 9+4x

2(9+4x)-3x = 13

18+8x-3x = 13

5x = -5

x = -1

y = 9-4 = 5

2.

x = 10-7y

4(10-7y)+5y = -6

40-28y+5y = -6

-23y =-46

y = 46/23 = 2

x = 10-14 = -4