a) \(63,45\times3,2-2\times63,45-63,45\times0,2\)
\(=63,45\times\left(3,2-2-0,2\right)\)
\(=63,45\times1\)
\(=63,45\)
b) \(5,67\times4,8+5,67\times4,2+5,67\)
\(=5,67\times\left(4,8+4,2+1\right)\)
\(=5,67\times10\)
\(=56,7\)
1. 63,45 * (3,2-2-0,2) = 63,45 * 1 = 63,45
2. 5,67 * (4,8+4,2+1) = 5,67 * 10 = 56,7