xxmattieboo7xx
xxmattieboo7xx
15.03.2020 • 
Mathematics

Which of these systems of equations has a solution of (6,-7)?
A.x-2y=20
2x-y=19
b.x-2y=20
2x+y=19
c.x+2y=20
2x-y=19
d.x+2y=20
2x+y=19

Solved
Show answers

Ask an AI advisor a question