Istumbled upon this question and cannot seem to find the answer.

list two materials, other than sugar, that a plant may use to store energy

They use carbohydrate or better known as starch, and they also use lipids to store energy

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.

: -)

can you give me more to work here with plzs and you