In order to find a number that makes the equation 93 - something - 19 = 47 true, we can proceed like this:
First, let's combine like terms on the left of the equation, that is the numbers 93 and 19, like this:
93 - something - 19 = 47
93 - 19 - something = 47
74 - how much = 47
Now, we just have to subtract 74 on both sides of the equation:
74 - 74 -something = 47 - 74
Since we are subtracting 74 to 74 on the left, we get 0:
0 - something = -27
We can ignore the 0, then we get:
-something = -27
Similarly, let's add 27on both sides:
-something + 27= -27+ 27
-something + 27= 0
"something" represents a number, the one that we want to find, then we can add it on both sides, like this:
-something + something + 27= 0 + something
0 + 27 = 0 + something
27= something
something = 27
Then, the number that makes this equation true is 27