Answer get 75 pt if you did this just give pdf pl its a project

OMG ive done this...

the instructions for the egg and sperm one are down there mine was not very good maybe yours will be a bit better loll

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.

: -)

b.have there own function.