Answer:
[tex]Expression: 20-5r[/tex]
Step-by-step explanation:
Given
[tex]Expression: 31-4-(5r+7)[/tex]
Required
Rewrite with fewer terms
[tex]Expression: 31-4-(5r+7)[/tex]
Open Bracket
[tex]Expression: 31-4-5r-7[/tex]
Collect Like Terms
[tex]Expression: 31-4-7-5r[/tex]
[tex]Expression: 20-5r[/tex]
Hence, the equivalent is 20 - 5r
