25.44+5.6+4.56=25.44+4.56+5.6=30+5.6=35.612.3+7+0.7=12.3+0.7+7=13+7=20...........
12.7+0.98+3.02+5.3=···24.52-(7.5+4.52)=···4.16+27.35+6.84=····23.75-8.64-3.36=····19.83-(9.83+6.39)=··3.45+8.7+16.55+1.3=···
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