2a+3−a−2= 2a+3-a-2= 2a+3−a−2=
We can use the substitutive property and rearrange the exercise in a way that makes it easier for us to solve the exercise:
2a−a+3−2= 2a-a+3-2= 2a−a+3−2=
We solve the exercise from left to right:
2a−a=a 2a-a=a 2a−a=a
3−2=1 3-2=1 3−2=1
Therefore, we obtain:
a+1 a+1 a+1