Question

The sum of a and 3a is​

Answer 1

Explanation:

a+3a

since they are like terms u can add them

=4a

therefore a+3a=4a

Answer 2

`\boxed{4a}` ✅

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`a + 3a \\ = 4a`

`\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.ඞ}}}}}`