Number of songs

Write an expression for the number of songs they need for this show. Evan and Peter have a radio show that has 2 parts. They need 4 fewer than 11 songs in the first part. In the second part, they need 5 fewer than 3 times the number of songs in the first part.

Correct result:

a =  7
b =  16
t =  23

Solution:

$a=11-4=7$

$b=3\cdot a-5=3\cdot 7-5=16$

$t=a+b=7+16=23$

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