5A =42X ⇒ A = 42 / 5 = 8.4
A / 2 = 6X + 3X
8.4 / 2 = 4.2 = 6X + 3X
4.2 = 9X ⇒ X = 4.2 / 9 = 0.467
0.467 = A / 2 ⇒ A = 0.467 * 2 = 0.934
5A = X / 5 ⇒ 5A = 0.934 * 5 = 4.67 ⇒
⇒ A / 2 = 4.2 , X = 0.467 ⇒ ( 4.2 * 2 = ( 6 * 0.467 ) + ( 3 * 0.467 )
A = 4.203 * 2 = 8.406 ⇒ 5A = 5 * 8.406 = 42.03 ⇒ 42.03 ≈ 42
X1 * 6 = 4.67 * 6 = 28.02 ( dney rabotal perviy )
X2 * 3 = 4.67 * 3 = 14.01 ( dney rabotal vtoroy )
X1 - X2 = 28.02 - 14.01 = 14.01
Perviy rabotal 28.02 dney , a vtoroy 14.01 . Perviy rabotal 2 raz ( 14.01 dney ) bolshe chem vtoroy
A = rabota , X = dni