7-3 (x-5) thxs

To simplify the expression 7-3(x-5), we can follow the order of operations. The order of operations is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).

First, we need to distribute the -3 to the terms inside the parentheses:
7 - 3(x) + 3(5)

Next, we simplify the expression inside the parentheses:
7 - 3x + 15

Finally, we combine like terms, which means adding or subtracting the terms with the same variable(s) or constant(s):
(7 + 15) - 3x

The sum of 7 and 15 is 22, so the simplified expression is:
22 - 3x