Question

Blank tens 15 ones equals 6 tens 5 ones

Answer 1

10x+15(1)=6(10)+5(1)
10x+15=60+5
10x+15=65
10x+15-15=65-15
10x=50
1/10(10x)=1/10(50)
x=5
If you had to solve for x

Answer 2

5 tens because if it is 15 it is a “tens”