Решить уравнение 839

Question

Решить уравнение 839

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Answer 1

1) (51/14) / (9/7) = х / (15/10)
(9/7)*х=(51/14)*(15/10)
(9/7)х=(153/14)
18х=153
х= (153/18)
х=8,5

Comments

2) (38/15)/(19/5)=(15/10)/z

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(38/15)z= (15/10)*(19/5)

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(38/15)z=(57/10)

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z=(57/10)/(15/38)

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z=(57/10)*(38/15)

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z=57/25