50 points.

analyzing digestion - the effect of enzymes on food

can i get some with this? i don't know how this works

i think that you just have to fill in the blanks of each of the questions

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.

: -)

the answer to your question is slate