Question

Twice a number decreased by 8 is 2 less than half the number. What is the number?

Answer 1

Answer:

4

Step-by-step explanation:

with th information given we can express the equation:

$2x-8=\frac{x}{2} -2$

where $x$ is the unknown number.

to clear for $x$ first we multiply the equation by 2, to eliminate the fraction:

$2(2x-8=\frac{x}{2}-2 )\\4x-16=x-4$

moving all terms with $x$ to the left:

$4x-x-16=-4\\3x-16=-4$

and adding +16 to each side:

$3x-16+16=-4+16\\3x=12$

and finally, dividing by 3

$x=\frac{12}{4} =4$

the number is 4.

Answer 2

i think the equation is

2n-8=2-1/2n