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Ответ:

1)

4/17 × х +1 1/2 х=5 2/3

4/17 × 5 2/3 +1 1/2

1 1/2=3/2 5 3/3=17/3

4/17×3/2+17/3

4/17×3/2=28/68=14/32=7/16

7/16+17/13

7/16×13=91/208

17/13×16=272/208

91/208+272/208=363/208

2)

1 3/16×8+у. у=5 2/5

1 3/16×8+4 2/5

1 3/16=19/16 ; 4 2/5=22/5

19/16×8=152/16=19/2

19/2+22/5

19/2×5=95/10 ; 22/5×2=44/10

95/10+44/10=139/10