Question 570069
2a+6=-a-8

You find that the variable a is on both sides of the = sign.

to find the value of a you have to have the a's on one side and the numbers on the other side.

Fisrt lets bring the a on the right side to the left  of the = sign

add  a  to both sides of the equation

2a+a+6 =-a+a-8

2a+a=3a,  +a & -a= 0 on the right side. You have -8 left

3a+6 =-8

we remove the number from the left side of the = sign

add -6 to both sides of the equation

3a+6-6 = -8-6

+6 & -6 =0

3a= -14

Now the 3 has to be eliminated to find the value of a

you divide both sides of the equation by 3

{{{(cross(3))a/(cross(3))}}} ={{{ -14/3}}}

{{{a=-14/3}}}