(19) Alfabet... matematic": a) (9x9-6x6-a) + (13 + 28:4) = 5 x 10 + 3; m) (9 × 9-m-8x4): 7 = 2 × 2; b) (99-b-3 × 8) + 2 × 6:2 = 8 × 2 + 5×10; n) (9×7+ n-5 × 8) - 5 x 5 +70 o) (87-9x4-0)-5x5 +10:2=5 p) 93 (85-9 x 9 +5 x 8) - p = r) (5 x 5 + 6×6-) + 6×5-5x s) (8 x 9 + s-5x8)-(30-5x2 +5 t) (36-5 × 6-t) + 9x8-7x10 (6 x 4:3+ c): 7 = 16:4; (9 x 4:6 xd) - 5 x 5 = 45:9; (23-6x3 + g) + 3x9-8x3: 6 = 34; h) (3x9+9: h) + 5×4:2-(12-4 × 2) = 6 x 6; u) (7 × 7-6x6+ u)- 24:3-2 i) (47 + 7): i = 28:4+ 42:6-35:7; v) (v-5 x 5-2 x 8) + 6 x 5-5x x) (x + 8x2+6×8)-8x9+8x8 = y) (y + 5 x 5) - 6x6 = 40:2+ 3; z) (6 × 9-z) - 3 x 10+ 16:2=4 (e-5 × 6 + 10 × 5) : 5 + 4 × 8 = 42; (96-3x4-5 x 8) + f-9 x 7 = 13; j) (6 x 5 + 4 xj-8) : 6 = 28:4; k) (8 x 8-32-12: k) - (40 - 2 x 10) = 3 × 3; 1) (95-9×5-9x):8=9x4 -8 × 4; 1
Urgentttt​