3(4) + 3.5
12 + 3.5
15.5
Answer by JKismyhusbandbae:
[tex]\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=3\cdot \:4+3.5\\\mathrm{Multiply\:the\:numbers:}\:3\cdot \:4=12\\=12+3.5\\\mathrm{Add\:the\:numbers:}\:12+3.5=15.5\\=15.5[/tex]
