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mucciak3634
27.02.2020 •
Mathematics
2/7 - 5/7
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Ответ:
-5/7
Step-by-step explanation:
2-5 is -3 so the denominator stays the same so -3/7.
Ответ:
for the second one, it is : 4 × (2 + 3) - 1 = 19
for the third one, it is 4 + ((3² +1) ÷ 5) = 6
for the fourth one, it is : (3 + 2) × 6 - 3 = 27
for the fifth one, it is : 7 + 4 - (9 ÷ 3) = 8
for the sixth one, it is : (6 ÷ 2) + (4 × 2) = 11
for the seventh one, it is : (3 + 1)² ÷ 4 = 4
for the eight one, it is : (12 + 20) ÷ 4² = 2
for the ninth one, it is : 7 + (7 - 18 ÷ 6)² = 23