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Ray Of Light [21]
3 years ago
7

If 16x-2=30 what is the value of 8x-4?

Mathematics
2 answers:
s2008m [1.1K]3 years ago
5 0
12 is the value of 8x-4 when 16x-2=30
16x - 2 = 30
+ 2 +2
16x = 32 , x=2
Substitute :
8x - 4 = 8(2) - 4 = 16-4 = 12!
Dvinal [7]3 years ago
4 0

Answer:

12

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define 1st equation</u>

16x - 2 = 30

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Add 2 on both sides:                    16x = 32
  2. Divide 16 on both sides:               x = 2

<u>Step 3: Solve equation</u>

  1. Define:                    8x - 4
  2. Substitute:              8(2) - 4
  3. Multiply:                  16 - 4
  4. Subtract:                 12

And we have our final answer!

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