a) 18 = 20 + (–2)
b) –10 = 1 – 11
c) 7,8 = 10 + (–2,2)
d) –2,6 = 5 + (–7,6)
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Answers & Comments
a) 18 = 20 + (–2)
b) –10 = 1 – 11
c) 7,8 = 10 + (–2,2)
d) –2,6 = 5 + (–7,6)