Question

Which phrase can be represented by an equation? twice as much as a number 12 less than a number half of a number is 15 the difference of 20 and a number

Answer 1

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

twice as much as a number is expressed as $2x$

12 less than a number half of a number is 15 is expressed as

$\dfrac{x}{2}-12=15$

the difference of 20 and a number is expressed as

$20-x$

As we know that equation contains an equality.

So, Second option is correct.

Answer 2

An equation has to include an equal sign.....or a phrase has to include " is " to be an equation....so ur equation is : 
half of a number is 15.....1/2x = 15 <== ur equation