Tuesday

October 21, 2014

October 21, 2014

Posted by **eric** on Thursday, July 7, 2011 at 9:20am.

7x-5y=-26

- algebra system of equation -
**Henry**, Friday, July 8, 2011 at 5:00pmEq1: 10x-5y = 20.

Eq2: 7x-5y = -26.

Multiply Eq1 by -1:

-10x+5y = -20,

+7x-5y = -26.

Sum:x = -3x+0 = -46,

x = -46/-3 = 15 1/3.

In Eq2, substitute 46/3 for x:

7(46/3) - 5y = -26,

Solve for y and get:

26 2/3 = 80/3.

Solution Set = (x,y) = (15 1/3,26 2/3).

Check the given Eqs and make sure the signs are correct.

**Answer this Question**

**Related Questions**

Intermediate Algebra - Determine whether the point (1, 8) is a solution of the ...

algebra - Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 ...

math - 1. Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 ...

Algebra 2 - Can someone check my answers. Write the following equations in ...

Math - Find the equation of the tangent line 5x^2+y^2=14 at (1,3). P.S: It's ...

algebra - 1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)...

10 grade algebra - 15. In the following system of equations, what does x equal...

College Algebra - Solve the following equation in the complex number system x^4+...

algebra 1 - Use elimination to solve the the system of equations given by 10x-...

Pre-algebra - Solve. 29x – 2(9x – 0.455) = 10x + 0.525 Give us you thinking on ...