Step-by-step explanation:
A two-digit number, such as 79, contains a tens place and a ones place.
That is because 79 is also equal to 70 + 9.
The tens place is thus the 7, since since 7 × 10 = 70
and the ones place is the 9.
So lets Subtract breaking apart 143 - 79.
Break 79 down into its parts:
70 + 9.
Subtract 70 from the original number:
143 - 70 = 73
Subtract 9 from the answer:
73 - 9 = 64
Therefore, 64 is the final answer.