how do I remove the MSB of a value before concatenating it with another?

I am writing to two 7-segment LEDs and each of them are controlled with seven bits. I have each digit I want to display stored as a byte. I need to write the high and low digit values as a concatenation to the 7-segment LEDs.  This is a problem because the MSB of the low digit will become the LSB of the high digit. For example, if I am writing the value 99 to the 7-segment LEDs, "0011000" needs to be written to each 7-segment LED.  But because the values are stored as bytes, "00011000" will be the output value for 9, and the concatentation of 9 and 9 would be 00011000 00011000, and "0110000 0011000" will be written to the LEDs instead of "0011000 0011000". How do I get rid of the low digit MSB before concatenating??