Помогите по математике

Question

Помогите по математике

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Answer 1

2/9х=5/12
х=5/12 : 2/9
х=5/12*9/2
х=(5*3)/(4*2)
х=15/12=5/4

4/15у=2/5
у=2/5:4/15
у=2/5 * 15/4
у=3/2