To solve this, we first need to distribute the negative sign in front of the parentheses:
(a - 2) + (a - 3) - (-2a + 7)
= a - 2 + a - 3 + 2a - 7= a + a + 2a - 2 - 3 - 7= 4a - 12
Therefore, (a - 2) + (a - 3) - (-2a + 7) simplifies to 4a - 12.
To solve this, we first need to distribute the negative sign in front of the parentheses:
(a - 2) + (a - 3) - (-2a + 7)
= a - 2 + a - 3 + 2a - 7
= a + a + 2a - 2 - 3 - 7
= 4a - 12
Therefore, (a - 2) + (a - 3) - (-2a + 7) simplifies to 4a - 12.