the product of 3 and the sum of m and 2n
The sum of m and 2n means we add 2n to m:
m + 2n
The product of 3 means we multiply the sum m + 2n by 3:
3(m + 2n)
The sum of m and 2n means we add 2n to m:
m + 2n
The product of 3 means we multiply the sum m + 2n by 3:
3(m + 2n)