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Dasha20922
@Dasha20922
July 2022
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Решите г пожалуйста тему не поняла
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jekadva
В)
20/21*b = 25/6*4/7
20/21b= 50/21
b=50/21 * 21/20
b= 5/2 = 2 1/2
г)
5 3/5*x = 5 1/4*3 1/2
28/5x = 21/4 * 7/2
28/5x = 147/8
x = 147/8 * 5/28
x = 735/224=3 63/224
x = 3 21/32
д)
7x*6 = 12,3*4,2
42x = 51,66
x=51,66:42
x=1,23
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Answers & Comments
20/21*b = 25/6*4/7
20/21b= 50/21
b=50/21 * 21/20
b= 5/2 = 2 1/2
г)
5 3/5*x = 5 1/4*3 1/2
28/5x = 21/4 * 7/2
28/5x = 147/8
x = 147/8 * 5/28
x = 735/224=3 63/224
x = 3 21/32
д)
7x*6 = 12,3*4,2
42x = 51,66
x=51,66:42
x=1,23