Answer:
1 tens 3 ones
Step-by-step explanation:
All you do is count the numbers in the place value chart.
Since 31-18=13, all you do is count 10+1+1+1=13.
Supplement Postulate? they are supplementary.
13/6x + 6
combine using like terms and you get
4/6 x + 5
3/6x + 1
x
=