1. solving system of equations

‎6x+5y=150
3x+2z=350

How can i find x,y,z from just two equations?

2. Re: solving system of equations

Originally Posted by Mhmh96
‎6x+5y=150
3x+2z=350

How can i find x,y,z from just two equations?
This system is undetermined . Solution is given by :

$(x,y,z)=\left(x,\frac{150-6x}{5},\frac{350-3x}{2}\right)$

3. Re: solving system of equations

What if i want to compare 5y and 2z?

4. Re: solving system of equations

Originally Posted by Mhmh96
What if i want to compare 5y and 2z?
Then you should compare :

$(150-6x)~\text{and}~(350-3x)$

5. Re: solving system of equations

But how if i dont know the value of x?

6. Re: solving system of equations

Originally Posted by Mhmh96
But how if i dont know the value of x?
You can compare them only if you know value of x .