trillsmith
19.08.2019 •
Mathematics
Solve the system
x - 2y = -6
3x + y = -4
Solved
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Ответ:
{x-2y=-6
{3x+y=-4 /*2
{x-2y=-6
{6x+2y=-8 (+)
7x=-14 /:7
x=-2
3x+y=-4
3*(-2)+y=-4
-6+y=-4
y=2
Solution: (-2; 2)
Ответ:
It would be the transitive property! If you look up "If a = b, and b = c, then a = c" you'd see the transitive property. I hope this helps!