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08.10.2019 •
Mathematics
Which property would allow you to use mental computation to simply the problem the problem 27 +15 +3 +5
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Ответ:
x - 1/2 = 4
x - 1/2×2 = 4×2
x - 1 = 8
x - 1 + 1 = 8 +1
x = 9
Step-by-step explanation:
Hope that will help you