The equal sign, pronounced "equal to", was invented by Robert Record in 1557 AD. In a mathematical equation, the equal sign is placed between two (or more) expressions that have the same value. In unicode and ascii, it. In other words, "two three equals five" is cumbersome, but using symbols instead of numbers and operations: "2 + 3 = 5" helps us understand. But we can do better. In 1557, r.robert invented the equal sign, written with two parallel lines (=) because ".
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