Tuesday

September 23, 2014

September 23, 2014

Posted by **thomas** on Thursday, February 22, 2007 at 8:30pm.

x-y=10

3x+y=11

i chose to substitute y in the first equation

my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd i make a mistake?

In the first equation, y= x-10

put that into the second to get

3x + x-10=11

4x=21

x= 4.25

Then you can solve for y.

It's right! Congrats!

**Answer this Question**

**Related Questions**

How do I do this.?(Math.) - Use the Substitution method to solve the system of ...

Algebra 1 - 1.To solve the linear system below, which substitution of unkowns is...

algebra - 5x-2y=-5 y-5x=3 substitution Substitute 5x +3 for y in the first ...

substitution method - -x-4y=-14 2x=y+1 Let's look at your two equations. -x - 4y...

ALGEBRA 1!PLZ HELP! - Use the Substitution method to solve the system of ...

calculus-integration! - should i use substitution?? if yes how should should i ...

substitution method - -3x+y=-5 x+2y=0 Your equations: -3x + y = -5 x + 2y = 0 ...

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

math - Solve systems by substitution 5x - 2y = -5 y - 5x = 3 Substitute 5x + 3 ...

Algebra 1 HELP PLZ!!! - Use the Substitution method to solve the system of ...