\(M=b:\left(119.a+2005\right)+\left(119:a-b.2005\right)\)
\(M=0:\left(119.119+2005\right)+\left(119:119-0.2005\right)\)
\(M=0+\left(1-0\right)=1\)
Vì a = 119, b = 0. Thay vào M ta có:
\(M=b:\left(119\cdot a+2005\right)+\left(119:a-b\cdot2005\right)\)
\(=119:\left(119\cdot0+2005\right)+\left(119:119-0:2005\right)\)
\(=119:\left(0+2005\right)+\left(1-0\right)\)
\(=119:2005+1\)