Is a series of changes that cells go through during cell that results in 2 identical daughter cells.
a. mitosis; division
b. meiosis; division
c. mitosis; multiplication
d. meiosis; multiplication

Mitosis is a series of changes that cells go through during cell division that results in 2 identical daughter cells.

Explanation:

Mitosis is a process in which the cell segregates its DNA into its daughter cells which are duplicated by replication in the interphase stage of the cell cycle. In mitosis, two identical daughter cells are formed. The purpose of mitosis is the growth and repair of the cells.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

well, i believe that the answer is 2. : 3