# Find all natural value x at which inequality is right. 1 2/7menshe x/7 less than 2 3/7.

Iosif

142

1 2/7 ∠ x / 7 ∠ 2 3/7 9/7 ∠ x / 7 ∠ 17/7 we multiply all parts on 7 9 ∠ x ∠ 17 all natural values x at which inequality is right: 10, 11, 12, 13, 14, 15, 16 1 2/7 lt; lt X/7; 2 3/7 9/7 lt; lt X/7; 17/7 9 lt; X lt; 17 (9; 17) Answer 10; 11; 12; 13; 14; 15; 16

313

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