Thursday

July 24, 2014

July 24, 2014

Posted by **kate** on Wednesday, July 24, 2013 at 11:03pm.

3x+4y=29

2x–5y=-19

- math -
**Anonymous**, Thursday, July 25, 2013 at 12:05amMultiply I eq by 2 and II by 3

6x+8y=58

6x-15y=-57. Subtract II eq from I. Signs of II eq will change:-6x+15y=57.

Thus, 8y+15y=58+57 Or 23y=115

or y=115/23=5.

Now substitute this in any original eq:

3x-4x5=29 or 3x=29-20=9, hence x=9/3=3

**Related Questions**

Math - Solve for x: 5/x+6+2/x^2+7x+6=3/x+1 5/x+5+2/(x+6)(x+1)=3/x+1 5(x+6)(x+1)/...

Algebra I - How do you write a system of linear equations in two variables? ...

Algebra HELP - how to solve this equation in the real number system: 2x^(3) + 3x...

Algebra - Solve the system of equations using substitution. x + 4y = -5 3x - 8y...

Math - Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 ...

Math - I am really have a tough time trying to solve this problem. I think my ...

Algebra 2 - I need help with this problem because I do not have a graphing ...

Algebra - I need help with these two problems. I need to have all of the steps ...

Calculus - Follow the steps below for the given function. (Do not use mixed ...

Math - Use the IVT to show that there is a root of the equation 4x^3-6x^2+3x-2=0...