Dr. Burrows is measuring the weight of a substance for a science experiment. He added a mystery substance (m) to his experiment. Dr. Burrows used the equation 13.93 + m = 18.0 to find out how much he added. How much of the mystery substance (m) did he add to his

Dr. Burrows added 18.0 - 13.93 = <<18.0-13.93=4.07>>4.07 grams of the mystery substance. Answer: \boxed{4.07}.

To find out how much of the mystery substance (m) Dr. Burrows added to his experiment, we can solve the equation:

13.93 + m = 18.0

To isolate the variable, we need to remove 13.93 from both sides of the equation:

m = 18.0 - 13.93

Calculating the right side of the equation:

m = 4.07

Therefore, Dr. Burrows added 4.07 units of the mystery substance (m) to his experiment.

To find out how much of the mystery substance (m) Dr. Burrows added to his experiment, we can start by solving the equation for m.

The equation given is 13.93 + m = 18.0

To isolate the variable m, we can subtract 13.93 from both sides of the equation:

13.93 + m - 13.93 = 18.0 - 13.93

Simplifying both sides gives:

m = 4.07

Therefore, Dr. Burrows added 4.07 units of the mystery substance (m) to his experiment.