Sunday

December 21, 2014

December 21, 2014

Posted by **crystine** on Sunday, September 11, 2011 at 2:28pm.

3x+y=-1

2x+3y=18

using substitution

- Algebra 2 -
**Ms. Sue**, Sunday, September 11, 2011 at 2:37pm3x+y=-1

y = -1 -3x

2x+3y=18

2x + 3(-1-3x) = 18

2x - 3 - 9x = 18

-7x = 21

x = -3

Substitute -3 for x in the first problem to find the value of y.

- Algebra 2 -
**sukhi**, Wednesday, September 14, 2011 at 9:10pmmatrix[2x,0

4,-y]=matrix[4,0

4,1]

**Answer this Question**

**Related Questions**

math/algebra - I need help solving the linear system using substitution of the ...

College Math - I need help solving these problems by using the substitution ...

college algebra - Please help in solving this problem using the method of ...

algebra 1 - I was just wondering if anybody could explain to me the steps in '...

algebra one - I need help with solving for y and x, for example in a problem ...

algebra - Solving Systems by Substitution: 2. x=1-4y 2x+7y=3 I need help ...

Math - I need help solving this using U- Substitution (x^2-4)^2 + (x^2-4) -6=0

Algabra - I need help solving this using U- Substitution (x^2-4)^2 + (x^2-4) -6=...

Math - I need help solving this using the substitution method 4p-2q= 16, 5p + 7q...

math - What strategy did you use in solving this problem? 22. Suppose that you ...