4/9x=3 3/5; 4 2/7=1; 1 5/14-5/28x=23 4/7

Question

4/9x=3 3/5; 4 2/7=1; 1 5/14-5/28x=23 4/7

Answer 1

1)4/9x=9/5
9/4×4/9x=9/4×9/5
x=81/20=4 1/20

Comments

2)x=7/8

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3)x=71 3/5