Acommon positive affect game by performing flexibility, cardiorespiratory, and muscular strength exercises is that each?
improve digestion
increase lean body mass
decrease soreness
relieve stress

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.

: -)

your spelling is a little off : ]