Thursday

August 21, 2014

August 21, 2014

Posted by **Andrea** on Tuesday, September 25, 2012 at 2:46pm.

4x - y=5

4x + 4y= -4

Also by using elimination.

- Algebra -
**Steve**, Tuesday, September 25, 2012 at 3:05pmsubstitution: since you have y = 4x-5,

4x + 4(4x-5) = -4

20x = 16

x = 4/5

y = -9/5

using elimination, subtract one equation from the other to get

5y = -9

y = -9/5

now solve for x to get x=4/5

**Related Questions**

math - how do i solve this linear system using substitution or elimination -16x+...

algebra - i need help with these problems (either a solution or how to plug them...

Algebra - Solving system of linear equations by using the apropiate method name ...

algebra 2 - Nonlinear systems Solve the system by elimination. y=x^2+2 -4x-y=10 ...

algebra 2 - Nonlinear homework... Solve the system by elimination. 1)y=x^2+2 -4x...

Algebra Multiple Choice - Hello, This is the last of questions I have for my ...

algebra 1 - Got a test tomorrow... Say you have a system of equations (linear), ...

algebra - solve the linear system from problem 1 using elimination 4x-y=5 4x+4y...

algebra 1 - 1. Solve the linear system using substitution. 4x-y=5 4x+4y=-4

Algebra - solving linear equations w/ substitution - The question in the book ...