Question

0.5a − 0.3 = 5 (solve for a)

Answer 1

0.5a - 0.3 = 5

Add 0.3 to both sides:

0.5a = 5.3

Divide both sides by 0.5:

a = 10.6

Answer 2

$0.5a - 0.3 = 5 \ |\times 10 \\\\ 5a-3=50 \ |+3 \\\\ 5a=53 \ |:5 \\\\ a=\frac{53}{5} \\\\ a=10\frac{3}{5}\\\\ a=10.6$