3 9 x ≥ 21 July 8, 2019 16 32 64 128 3 9 x 21 3 х 9 21 4 3 9 x 7 21 3 1 9 х 21 3 9 (- 7 x )= 0 9 9x 21 9 x 21 3 2 Väliovi 3 peilinen 9 x 21 9 x 3 216 3 x 9 )+ 21x 24x 9 5 2x 3 )-( x 9 )= 21 3 7 x 5 9 x 21 5 Solve 3 x 9 2 21 7 9 x 3 21 simplified