Question

3a+1=-3.6(a-1)

Answer 1

3a + 1 = -3.6(a-1)
First you want to distribute the -3.6 to a and -1
3a + 1 = -3.6a + 3.6
Then you want to isolate a.
6.6 a + 1 = 3.6
isolate a again
6.6a = 2.6
divide
a = 0.393939

Answer 2

ok thanks a lot