(-0.27-0.5)-(-1.2-2.31)

Question

(-0.27-0.5)-(-1.2-2.31)

Answer 1

-0.77+3.51=2.74
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Answer 2

Решение:
(-0.27-0.5)-(-1.2-2.31)=(-0.77)(+1.2=2.31)=-0.77+3.51=2.74