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never [62]
3 years ago
6

Solve the system of equations by graphing x+y=-7 2x + y = 6

Mathematics
2 answers:
andrew-mc [135]3 years ago
5 0

Answer:

x=13, y=-20

Step-by-step explanation:

x+y=-7

2x+y=6

Subtract x from both sides of the first equation to be left with y=-x-7. Substituting this into the second equation, you get:

2x-x-7=6

x-y=6

x=13

y=-20

I also solved this graphically, which you can see below. Hope this helps!

valentinak56 [21]3 years ago
3 0

The red line is x+y=-7

The blue line is 2x + y = 6

(13, -20) is the solution

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