171 ÷ 9 =
1 point
( 9x 10) + (9 x 9) = 171; 9 x 19= 171
(9 x 10) + (9 x 10) = 180 ; 90 x 2 =180
( 6 x3) + (4 x 6) =42 ; 7 x 6 = 42
( 9 x5) + (8 x 6) =93 ; 31 x 3 = 93
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