subtract (a-3a+5)-(-a+2b+3)
Mathematics · High School · Sun Jan 24 2021
Answered on
Given the equation:
(a - 3a + 5) - ( -a + 2b + 3)
Subtract the equation.
Solution:
In subtracting the values, we must take note of the two negative signs that are introduced to each other. It is a common mathematics rule in computation that when a negative number is introduced to a negative number, the sign will be positive, hence if a negative number is introduced to a positive number, the sign will be negative.
= (a - 3a + 5) - ( -a + 2b + 3)
= a - 3a + 5 + a - 2b -3
Combine like terms.
= -a + 2 - 2b
Final answer:
= 2 - a - 2b