Simplify (2m+15a-5)+(5a+10)

$(2 m + 15 a - 5) + (5 a + 10)$

Remove parentheses.

$2 m + 15 a - 5 + 5 a + 10$

Add $15 a$ and $5 a$ .

$2 m + 20 a - 5 + 10$

Simplify the expression.

Add $- 5$ and $10$ .

$2 m + 20 a + 5$

Reorder $2 m$ and $20 a$ .

$20 a + 2 m + 5$