[tex]\boxed{4a}[/tex] ✅
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
[tex]a + 3a \\ = 4a[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.ඞ}}}}}[/tex]
Answer:
Step-by-step explanation:
a+3a
since they are like terms u can add them
=4a
therefore a+3a=4a
