(1) 2.3 - [1.89 - 13.6 - (2.7 -0.8 -0.03 )
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Solution:
=12.79
Step-by-Step Explaination:
=2.3-[1.89-13.6-(2.7-0.5)]
=2.3-(1.89-13.6-2.2)
=2.3-(1.89-11.4)
=2.3-(-10.49)
=2.3+10.49
=12.79
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