Question

X-5y=30
3x+5y=-10
Solve the System of Equations

Answer 1

x = 5, y = -5

Explanation:

Using Elimination:

x - 5y = 30

3x + 5y = -10

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4x = 20

x = 5

5 - 5y = 30

-5y = 25

y = -5

Using Substitution:

x = 5y + 30

3(5y+30) + 5y = -10

15y + 90 + 5y = -10

20y + 90 = -10

20y = -100

y = -5

x - 5(-5) = 30

x + 25 = 30

x = 5