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3 years ago

8

Seven times a number plus three times another number equals -1 the sum of two numbers is -3 what are the numbers? 25 points!!

1 answer:

Reptile [31]3 years ago

5 0

7x+3y=-1
x+y=-3

8x+4y=-4
2x+y=-1
y=-1-2x

x+y=-3
x-1-2x=-3
-x=-2
x=2
y=-1-2*2=-1-4=-5

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