The mitochondrial matrix is similar to what structure in plant chloroplasts?
A
cytosol
B
intermembrane space
C
stroma
D
vacuole

i got something better   a catchphrase here it is

ahem  

ahem

what the squwock

explanation:

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.

: -)