Question

{120- {200: (2 x a+1) + 204} : 4} x 3+ 7x9=240

Answer 1

Răspuns:

{120- {200: (2 x a+1) + 204} : 4} x 3+ 7x9=240

{120- {200: (2 x a+1) + 204} : 4} x 3+ 63=240

{120- {200: (2 x a+1) + 204} : 4} x 3 = 240 - 63

{120- {200: (2 x a+1) + 204} : 4} x 3 = 177

{120- {200: (2 x a+1) + 204} : 4} = 177 : 3

120- {200: (2 x a+1) + 204} : 4 = 59

{200: (2 x a+1) + 204} : 4 = 120 - 59

{200: (2 x a+1) + 204} : 4 = 61

200: (2 x a+1) + 204 = 61 × 4

200: (2 x a+1) + 204 = 244

200: (2 x a+1) = 244 - 204

200: (2 x a+1) = 40

2 x a +1 = 200 : 40

2 × a + 1 = 5

2 × a = 5 - 1

2 × a = 4

a = 4 : 2

a = 2