Question

a+b+2 and a-b-1 .
add each pair of expression.​

Answer 1

Answer:

( a + b + 2) + ( a - b - 1)

( a + a ) + ( b - b ) + ( 2 -1)

2a + 0 + 1

2a + 1

Answer 2

Given,

$\[a + b + 2\,and\,a - b - 1\]$

Solution,

Add both expression.

$\[\begin{array}{l} = \left( {a + b + 2} \right) + \,\left( {a - b - 1} \right)\\ = 2a + 1\end{array}\]$

Hence the addition is $\[2a + 1\]$