SOLUTION: y=3x+5 x+y=-3

Question 1060138: y=3x+5
x+y=-3
Found 2 solutions by Alan3354, Cromlix:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Sub for y in the 2nd equation.

Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Hi there,
y=3x+5
x+y=-3
Rearrange:
-3x + y = 5..........Eq(1)
x + y = -3...........Eq(2)
Subtract Eq(2) from Eq(1)
-4x = 8
x = -2
Substitute x = -2 into
Eq(2)
x + y = -3
-2 + y = -3
....y = -3 + 2
....y = -1
{-2, -1}
Hope this helps :-)
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