Question

Find the sum of (3a+7)+(a−1)

Answer 1

`\huge{ \bold{ \boxed{ \text{4a + 6}}}}`

Explanation:

`\text{ (3a + 7) + (a - 1)}`

In addition , sign of each term in the expression remains unchanged. So, Remove the unnecessary brackets.

`\text{⇢ \: 3a + 7 + a - 1}`

Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.

`\text{⇢ \: 3a + a + 7 - 1}`

`\text{⇢ \boxed{ \text{4a + 6}}}`

And we're done! :D

Hope I helped!

Best regards! :D

~TheAnimeGirl