Question

36. 300+8x9+2x [250-3x (28: b +66)] = 452
vreau sa ma verific apropo dau coroana​

Answer 1

Răspuns:

Explicație pas cu pas:

300+8x9+2x [250-3x (28: b +66)] = 452

300+72+2x [250-3x (28: b +66)] = 452

372+2x [250-3x (28: b +66)] = 452

2x [250-3x (28: b +66)] = 452 - 372

[250-3x (28: b +66)] = 80 :2

250-3x (28: b +66) = 250 - 40

3x(28:b+66) = 210

28:b + 66 = 210 : 3

28:b + 66 = 70

28:b = 70 - 66

28:b = 4

b = 28 : 4

b = 7