5a + 2 (a + b) a=4 b=2

32

Step-by-step explanation:

first plug in the variables since they already give it to you

5·4+2 (4+2)

distribut first so it would be

5*4+8+4=?

multiply

and combine like terms

20+12=?

then just add

32

32 is the correct answer ...

5a + 2 (a + b)

5 (4) + 2 (4 + 2)

20 + 2 (6)

20 + 12

32