Monday

March 30, 2015

March 30, 2015

Posted by **Help!** on Friday, August 31, 2012 at 1:25am.

A) -6(x-3)+5 = -2x+10

I solved this and got x = 13/4. How am I suppose to figure out whether its identity or conditional equation?

Same goes with this problem

B) -7(x-3)+4x = 3(7-x)

-7x+21+4x = 21-3x

-21-3x = 21- 3x ?

- Math -
**MathMate**, Friday, August 31, 2012 at 11:19am(A)

x=13/4 means that the equation is valid*only*at x=13/4, and is not valid elsewhere.

Would that be an identity or a conditional equation?

(B)

There was an arithmetical error on the last line:

-7x+21+4x = 21-3x**+**21-3x = 21- 3x

So after cancelling, we get

21=21

Would that be a conditional equation or an identity (i.e. true for all values of x)?

**Answer this Question**

**Related Questions**

Algebra HELP! - Solve the equation identify as an identity, an inconsistent ...

Algebra - Solve the equation identify as an identity, an inconsistent equation ...

Algebra - Solve the equation identify as an identity, an inconsistent equation ...

math algebra - Part 1: Which part of the quadratic formula tells you whether the...

math - Suppose that someone said that the equation connecting points (-1, 1) and...

math - Suppose that someone said that the equation connecting points (-1, 1) and...

Algebra - My instructions are to solve the problem by showing the steps and ...

Algebra - I have some problems that I am having trouble with and I have some ...

ALGEBRA - suppose that someone has said that the equation connecting points ((-1...

Math - I have a matrix with brackets around [7 6 ][13] [14 -6] [8] and i know ...