Friday

October 24, 2014

October 24, 2014

Posted by **candy** on Thursday, April 29, 2010 at 11:33am.

5x - 2y = 15

5/3x - y = 5

a)(-2,1)

b) none

c)(3,0)

d) inifinite number if solutions

- algebra -
**drwls**, Thursday, April 29, 2010 at 3:47pmIf you want to learn the subject, you should learn how to solve the equations. You or others with different screen names have been submitting these simple multiple choice problems all day. In one case a wrong quess was made.

At the very least, try the different x,y combinations and see which one works. One of them does.

Learn the technique of substitution and you can solve these problems yourself. You could, for example, substitute (5/3)x - 5 for y in the first equation.

That would give you

5x - (10/3)x +10 = 15

(5/3)x = 5

x = (3/5)* 5 = 3

**Answer this Question**

**Related Questions**

algebra - what is the solution of the following linear system? -4x - y = 5 -12x...

algebra - what is the solution of the following linear system? -5x - 5y = -6 -5/...

algebra - what is the solution of the following linear system? -5x - 5y = -6 -5...

algebra - what is the solution of the following linear system ? 8x + 3y = 1 x + ...

algebra - what is the solution of the following linear system? 2y + 6x = -24 y...

algebra - what is the solutionof the following linear system? 2x + y = -1 x + 1/...

Linear algebra - Consider for every real number a the linear system of equations...

Linear Algebra - For which values of 'a' will the following system have no ...

Math - Use the substitution method to solve the following system of linear ...

Algebra 2 Helpp :( - QUESTIONS (vvv) (1) Solve the system by subsitution 2x + y...