(0.4y-3)/(1.5y+9)=-7/5

Solution for (0.4y-3)/(1.5y+9)=-7/5 equation:

(0.4y-3)/(1.5y+9)=-7/5

We move all terms to the left:

(0.4y-3)/(1.5y+9)-(-7/5)=0


Domain of the equation: (1.5y+9)!=0

We move all terms containing y to the left, all other terms to the right

1.5y!=-9

y!=-9/1.5

y!=-6

y∈R


We get rid of parentheses

(0.4y-3)/(1.5y+9)+7/5=0

We calculate fractions


(y-15)/(5y+45)+(7y+63)/(5y+45)=0

We multiply all the terms by the denominator


(y-15)+(7y+63)=0

We get rid of parentheses

y+7y-15+63=0

We add all the numbers together, and all the variables

8y+48=0

We move all terms containing y to the left, all other terms to the right

8y=-48

y=-48/8

y=-6

Równanie nie ma rozwiązania