וּמֹשֶׁה֙ בֶּן־שְׁמֹנִ֣ים שָׁנָ֔ה וְאַֽהֲרֹ֔ן בֶּן־שָׁלֹ֥שׁ וּשְׁמֹנִ֖ים שָׁנָ֑ה בְּדַבְּרָ֖ם אֶל־פַּרְעֹֽה׃ (פ)
And Moses was fourscore years old, and Aaron fourscore and three years old, when they spoke unto Pharaoh.
Read halakhic rulings (Jewish law) on Exodus 7:7 from the Mishneh Torah and classical halakhic sources, free online.