Question

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

Answer 1

Remember, you can do anything to an equatoin as long as you do it to both sides

also remember the distributive property
a(b+c)=ab+ac

3a+1=-3.6(a-1)
distribute the -3.6
3a+1=-3.6a+3.6
add 3.6a to both sides
6.6a+1=3.6
minus 1 both sides
6.6a=2.6
divide both sides by 6.6
a=0.39393939=$\frac{39}{99}=\frac{13}{33}$


$a=0.\overline{39}=\frac{13}{33}$