Wednesday

April 23, 2014

April 23, 2014

Posted by **Emily** on Thursday, January 13, 2011 at 7:49pm.

x - y = -1

3x + 5y = 21

- MATH -
**helper**, Thursday, January 13, 2011 at 8:06pmto Eliminate x

x - y = -1

3x + 5y = 21

multiply (x - y = -1) by -3

-3x + 3y = 3

3x + 5y = 21

add both equations

0 + 8y = 24

8y = 24

y = 3

**Related Questions**

Math - Solve the following system of equations. 8x + 5y = -91 3x + y = -21

Math - Solve the following system of equations. 8x + 5y = -91 3x + y = -21

College Algebra - Solve the system of equations using matrices. If system has no...

math - Consider the following system of equations. Y = 3x – 7 Y - 3x = 5 a) The ...

Algebra HELP - USE LINEAR COMBINATIONS TO SOLVE THE SYSTEM OF LINEAR EQUATIONS (...

algebra - Solve the system of equations: what is the y-value in the solution? ...

Algebra - Use the matrix tool to solve the system of equations. Choose the ...

Math - Solve the system of equations. 2x - 4y = 3 -3x + 5y = 1

math - solve the system of equations by elimination. 3x-4y=22 2x+5y=7

Math - Solve the system of linear equations by elimination. Thank You for your ...