Respuesta :

GabrielleHi
The answer is a=8 and how you do it is you add 6 to both sides then you divide 0.8 on each side to get the answer a=8 :)
0.8a-6=0.4
0.8a-6+6=0.4+6 / add 6 on both sides
0.8a=6.4 divide
a=8