SOLUTION: It says to solve the system of equations using the substitution method.
x+y=1
3x+4y=1
I think I'm supposed to see what X and Y are equal to, but I keep getting some pretty m
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Question 13887: It says to solve the system of equations using the substitution method.
x+y=1
3x+4y=1
I think I'm supposed to see what X and Y are equal to, but I keep getting some pretty messed up answers.
Answer by elima(1433) (Show Source): You can put this solution on YOUR website!
x+y=1
3x+4y=1
Is all that means, is one equation is solved for one variable and substituted into the other equatioon to solve that equation.
First you need to find out what x or y =, lets take the first equation(since it would the easier one to solve).
x+y=1
x=-y+1
Now we substitute that answer for x in the equation;
3(-y+1)+4y=1
-3y+3+4y=1
y+3=1
y=-2
Now we have what y= , now we can solve for x;
3x+4(-2)=1
3x-8=1
3x=9
x=3
Hope you understand
=)
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