x__=3x7+(___x7)

Answer 1

To evaluate the expression, we need to determine the value of the blank space represented by (___x7).

Since the expression is x__ = 3x7 + (___x7), we can simplify it by combining like terms:

x__ = 21 + (___x7)

As we don't have any further information about (___x7), we cannot determine its value.