Question

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

Answer 1

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