Question

Решите систему уравнений {4x-y=7
{3x+2y=8

Answer 1

4х - y = 7
y = 4x - 7
3x + 2( 4x - 7 ) = 8
3x + 8x - 14 = 8
11x = 22
x = 2
y = 8 - 7 = 1
Ответ ( 2 ; 1 )