If 16x-2=30 what is the value of 8x-4?
2 answers:
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!
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>
- Add 2 on both sides: 16x = 32
- Divide 16 on both sides: x = 2
<u>Step 3: Solve equation</u>
- Define: 8x - 4
- Substitute: 8(2) - 4
- Multiply: 16 - 4
- Subtract: 12
And we have our final answer!
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