Solve the absolute value equation 2x-4> 5

Hello.

The answer is: X=9/2

Step 1: Add 4 to both sides.

2x−4+4>5+4

2x>9

Step 2: Divide both sides by 2.

2x/2>9/2

X>9/2

Have a nice day

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb