Who was robert recorde?
Robert Recorde (ca. 1512–1558) was a Welsh physician and mathematician. He invented the "equals" sign (=) and also introduced the pre-existing "plus" sign (+) to English speakers in 1557.
Robert recorde was the person who invented the = equal sign.
Inventor or = sign
The inventor of the equal sign(=) is Robert recorde
Robert recorde invented'='