Question

решите систему уравнений 4x-y=11 6x-2y=13

Answer 1

y=4x-11
6x-2(4x-11)=13
6x-8x+22=13
-2x=-9
x=4,5
y=4*4,5-11=7
Ответ:(4,5;7)

Answer 2

y=11-4x/1
-2y=13-6x/-2
y=11-4x
y=-6.5+3