What property of chemical reactions is lowered by enzymes, enabling them to proceed rapidly?

I did use Google to help me, but the answer is correct, so

Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.

multiplying and dividing the two decimals and the eqations by the same number of the overalls