Calculating each operation step by step:
0.2 1.8 + 0.8 1.8 = 0.36 + 1.44 = 1.8
0.25 - 1.69 = -1.44
Therefore, the final result is:
1.8 - 1.69 = 0.11
Calculating each operation step by step:
0.2 1.8 + 0.8 1.8 = 0.36 + 1.44 = 1.8
0.25 - 1.69 = -1.44
Therefore, the final result is:
1.8 - 1.69 = 0.11