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Con el sistema de Igualación y Sustitución

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

i don’t see a picture

answer: i ! the answer is   9000 seconds, also d

hope i

-lavira : )