Question

if 2 is subtracted from a number and the result is mulplied by1/2,it becomes 6find the number.
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Answer 1

Answer:

X=14

Step-by-step explanation:

PREMISES

x-2×1/2=6

ASSUMPTIONS

Let x= the number

CALCULATIONS

(1) (x-2)(1/2)=6

(2) x/2–1=6

(3) (x/2)(2)-(1–1)=(6+1)(2)

(4) x-0=14

(5) x=

14

PROOF

If x=14, then the equations

(1) x/2–1=6

(2) 14/2–1=6

(3) 7–1=6 and

(4) 6=6 prove that x=14 is a root of the expression (x-2)(1/2)=6

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Answer 2

Answer:

Let the unknown number be x

$\frac{x-2}{2}$=6

x - 2 = 6 × 2

x - 2 = 12

x = 12 + 2

x = 14

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