Question

Efectuati ecuatia 1,3a=a+3.72

Answer 1

$1,3a=a+3,72 \\ 1,3 a-a=3,72 \\ 0,3 a=3,72 \\ a=3,72:0,3 \\ \boxed{x=12,4}$

Answer 2

1,3a = a + 3,72
1,3a - a = 3,72
0,3a = 3,72
a = 3,72 : 0,3
a = 12,4