Deshaun has 15 new magazines to read.
Let M be the number of magazines he would have left to read after reading R of them Write an equation relating M to R hen use this equation to find the number of magazines he would have left to read after reading 13 of them.
equation:
number left to read after reading 13 of them -------- magazines
The equation relating the number of magazines left to read (M) to the number of magazines read (R) is:
M = 15 - R
To find the number of magazines he would have left to read after reading 13 of them, we substitute R = 13 into the equation:
M = 15 - 13
M = 2
Therefore, after reading 13 magazines, Deshaun would have 2 magazines left to read.