Final answer:
To simplify the expression -1.3 to the nearest tenths place, round it to the nearest tenth by considering the digit after the tenths place. If the digit is 5 or greater, round up; if it is less than 5, round down.
Step-by-step explanation:
To simplify the expression -1.3 to the nearest tenths place, we need to round it to the nearest tenth. The nearest tenths place is the digit immediately to the right of the decimal point. Since the digit after the tenths place is 3, which is less than 5, we round down. The simplified expression to the nearest tenths place is -1.3.