Why does the x mean in the word equation for photosynthesis

The ''x'' in the word equation for photosynthesis is ATP

Explanation:

Oxygen + glucose carbon dioxide + water + x

A chemical reaction happens in this photosynthesis where the atom arrangements are changed to different arrangement to form a new substance.  When during the time of photosynthesis, the energy from the Sun is stored in the form of chemical energy.

Here the X is ATP, the Adenosine triphosphate which provides energy for the plants. ATP releases small amount of energy through hydrolysis.

the answer is

c. parental

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.

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