Mario set a goal to run 150 miles this month to prepare for a marathon. So far this month, he has run 75 miles. Write and solve an equation to show how many miles Mario has left to run this month to reach his goal.
m − 75 = 150; m = 225 miles
m + 75 = 150; m = 75 miles
75m = 150; m = 2 miles
m over 75 equals 150; m = 11,250 miles
