substitution method
posted by sooto .
3x+y=5 x+2y=0
Your equations:
3x + y = 5
x + 2y = 0
Let's solve the second equation for x:
x = 2y
Now let's substitute 2y for x in the first equation to solve for y:
3(2y) + y = 5
6y + y = 5
7y = 5
y = 5/7
Now let's substitute 5/7 for y in the second equation to solve for x:
x + 2(5/7) = 0
x + 10/7 = 0
x = 10/7
Check these values with the original equations. It always helps to check your work!
I hope this will help.
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