Six less than the product of 3 and a number is 4. use the variable b for the unknown number

Six less than means - 6 the product of 3 and a number (3 times b) is four=4

-6+3 times b=4

pemdas

multiplication first

3 times b=3b

3b-6=4

add 6 to both sides

3x=10

divide both sides by 3

x=10/3