Question

1. Is the equation true, false, or open?
5x+2=6x+11

a. Open; there is a variable
b. True; the expressions are the same for all values of the variables
c. False; the expressions are never the same

2. Which equation is an identity?

a. 8-(5x+2)=-5x-6
b. 7z+10-z=8z-2(z-5)
c. 8m-4=5m+8-m
d. 6y+5=6y-5

3. Which equation has no solution?

a. 3x-5=3x+8-x
b. 4y+5=4y-6
c. 7z+6=-7z-5***

4. How do I solve these types of problems? (I need steps on how to solve)

4(x-3)+5=1
96=-6(-4-3y)
-2+4=2(4x-3)-3(-8+4x)
-5=s-3
5/13t=-9
6=x+2/3
13+w/7=-18
17=-13-8x

5. What is an estimate of the solution of the equation 6n+3=2? Use a table.

If anyone could help me on these problems, I would really appreciate it.

Answer 1

Here is a nice website that shows steps that you asked for in #4 - I am not allowed to post it. Do a google search of solving linear equations and look for one related to NYS regents.

If you can solve for the variable, the equation is open.

If you eliminate all of the variables and have a statement like 2 =2 This is true which means any variable replacement will work and can be called an identity.

If you eliminate all of the variables and have a statement like -2 = 2 this is false and there is no solution.

Answer 2

u said it lol

Answer 3

haha fr