# How to do this question, finding the value of a?

##### 1 Answer

Mar 5, 2018

#### Explanation:

We know if

#f(x+y)=2(x+y)+3#

#=2x+2y+3#

#=(2x+3)+(2y+3)-3#

#=f(x)+f(y)-3#

Thus

Mar 5, 2018

We know if

#f(x+y)=2(x+y)+3#

#=2x+2y+3#

#=(2x+3)+(2y+3)-3#

#=f(x)+f(y)-3#

Thus

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