Robert Recorde, The designer ofwel the equals sign, introduced plus and minus to Britain in 1557 in The Whetstone of Witte:[14] "There be other twee signes in often use of which the first is made thus + and betokeneth more: the other is thus made − and betokeneth lesse." Give https://www.blurb.com/user/crowncloth0
Hoe Keuken wrappen zelf doen kan u tijd, stress en geld besparen.
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