Tuesday

July 22, 2014

July 22, 2014

Posted by **paul** on Sunday, November 14, 2010 at 7:27am.

3y=11-x

3x-y=3

thanks

- math - algebra -
**drwls**, Sunday, November 14, 2010 at 8:38amSubstitute 11 -3y for x in the second equation.

Why? Because the first equation tells you that

x = 11 -3y.

You should get

3(11 -3y)= 3 + y

33 - 9y = 3 + y

10y = 30

y = ___ ?

Then solve for x, using either of the first two equations you were given.

**Related Questions**

math-algebra - how do i solve this using the substitution method 3x+2y=7 2x-3y=-...

Substitution Method-Plz help - Use the Substitution method to solve the system ...

algebra - How would you solve the systemof equations using the substitution ...

algebra - o Systems of equations can be solved by graphing or by using ...

Algebra - Systems of equations can be solved by graphing or by using ...

Algebra - Solve using substitution method 3x+8y=20 x=24-7y

Algebra - x-2y=.9 4x-3y=13.1 Solve using the substitution method.

Algebra - 4x+y=42 6x-5y=50 Solve using the substitution method.

Algebra - Solve using the substitution method. 0.3x+0.2y=5,0.5x+0.4y=11

algebra - Solve using the substitution method 6x-3y=18, 6x+3y=-12