👤

29) Află termenul necunoscut: a) a +372 x 4 = 1500; 562 × 5+ b = 4200; c+ 400 × 3 = 1500; b) 250 x 3-x = 500; 285 × 2 + y = 1200; 512 × 3-z = 978; c) t-450 × 3 = 45; p - 1250 × 6 = 2000; m - 560 × 8 = 2521.​