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45 students speak Spanish at Francis Lewis High School

Step-by-step explanation:

Option1:

  18000 = 400x

  x = 45 students speak Spanish at Francis Lewis High School

Option2:

  72 ÷ 400 = 0.18

  0.18 * 250 = 45 students speak Spanish at Francis Lewis High School

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.