Question
When x is divided by 3,the remainder is z.In terms of z, which of the following could be equal to x ?
a. z-3
b. 3-z
c. 3z
d. 6+z
e. 9+2z
please answer and explain
a. z-3
b. 3-z
c. 3z
d. 6+z
e. 9+2z
please answer and explain
Answers
Steve
You know that if the remainder is zero, x is a multiple of 3.
But, there is a remainder of z, so add that in.
Only one of the choices is a multiple of 3, with an extra z
But, there is a remainder of z, so add that in.
Only one of the choices is a multiple of 3, with an extra z