a) \(A=\left(48\cdot0,75-\frac{240}{10}\right)-\left(16\cdot0,5-\frac{16}{4}\right)\)
\(A=48\cdot0,75-24-16\cdot0,5-4\)
\(A=48\cdot0,5\cdot\frac{3}{2}-24-16\cdot0,5+4\)
\(A=72\cdot0,5-16\cdot0,5-24+4\)
\(A=0,5\left(72-16\right)-20\)
\(A=\frac{1}{2}\cdot56-20\)
\(A=28-20=8\)
b) \(B=937,246\cdot6,149+62,754\cdot6,149-6149\)
\(B=937,246\cdot6,149+62,754\cdot6,149-1000\cdot6,149\)
\(B=6,149\left(937,246+62,754-1000\right)\)
\(B=6,149\cdot0=0\)