Question

Please check
A number m decreases by 4
m-4
A number d divided by k,minus 6
D/k-6
A number b less 8
B-8
The sum of a number m and 10
M+10
18 divided by a number r
18/r
32 decreased by a number n
32-n
A number k increased by itself
K+k

Answer 1

they are all correct.

Answer 2

the sum of a number and the quotient of three and seven