Answer :
Answer:
5-15= -20 20+12 = 8 yards
Step-by-step explanation:
Expression: 5-15+12=8
Sum: 8 yards
Its 8 yards because they lose a total of 20 yards then gains 12 yards so you just have to subtract 20 and 8 = 12 yards
Expression: -5-15+12. Sum: -8. Explain: they lost 5 so it is negative 5 then they lost another 15 so it is negative 15 then they got 12 so positive 12