To solve this problem you must apply the proccedure shown bellow:
1- You have the following expression given in the problem above:
[tex] 6a-\frac{3}{4}+7.5-\frac{b}{3} [/tex]
2- If [tex] a [/tex] and [tex] b [/tex] are variables, simplify the expression by adding the constants, which are the numbers without a letter:
[tex] 6a-\frac{b}{3}+6.75 [/tex]
3. By definition, the coefficients are the numbers that are multiplying a variable. Therefore the coefficients are: [tex] 6 [/tex] and [tex] \frac{1}{3} [/tex]