Question

(200 7+7а3)-(57+20а7)=?

Answer 1

Ответ:

$(2007 + 7a {}^{3} ) - (57 + 20a {}^{7} ) = 2007 + 7a {}^{3} - 57 - 20a {}^{7} = 1950 + 7a {}^{3} - 20a {}^{7} .$

Answer 2

It seems like you've provided an expression involving both numbers and variables. However, there seems to be a bit of confusion in the notation you used. It's not clear what you intended with the "7а3" and "20а7" terms. Are you trying to represent multiplication or something else with the "а" character?

If you could clarify the notation you're using, I'd be happy to help you solve the expression.