a)2 x x +34 =168

b) x x 11 + 51 = 273

c) x : 120 – 45 = 155

d) 320 : x – 127 = 33

a) ( x + 2) x 44 = 484

b) ( x + 321) : 12 = 34

c) ( x - 210) : 15 = 246

d)(205 - x) x 84 = 420

a) 442 + (418 - x) = 860;

b) (210 - x) + 107 = 317

c) (x - 32) - 68 = 0

d) 274 - (x + 18) = 4

(25x35)x40