Question

Solve absoulute value equation. |7x|+3<=21. show steps please.

Answer 1

The Steps Of Algebra.
1. Look
2. Identity The Unknown
3. Solve
4. State The Unknown
Step One:

We Have:

l7xl + 3 ≤ 21.

Step Two:

We Need To Identify X.

Step Three:

Simplify;

First, Subtract Three.

So:

l7xl + 3 ≤ 21

This Becomes:

l7xl ≤ 21-3

21-3 = 18

l7xl ≤ 18

Divide:

7x/7 = 1x = X

So:

X ≤ 18/7

18/7 = 2.57

Which Means:

X ≤ 2.57

Step Four:

X ≤ 2.57 To Make The Equation True.