Question

Solve using the substitution method
8x+3y=-34
-8x+y=42

Answer 1

x=-5
and y=2

Answer 2

-8x = 34 + 3y
34 + 3y + y = 42
4y = 8 => y = 2
-8x = 42 -2 => -8x = 40 => x = -5

Answer 3

-8x+y=42,so y=42+8x
because 8x+3y=-34
8x+3(42+8x)=-34
32x=-34-126=-160
x=-5,so y=2

Answer 4

8x+3y=-34
-8x+y=42
8 cancels and leaves you with 4 y so -34+42 leaves you with 8 so the y answer is definitely 2

Answer 5

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