-19<5m-4<-4

Add 4 to each section of the inequality because it does not contain the variable we are trying to solve for.

-19+4<5m<-4+4

Add -19 and 4.

-15<5m<-4+4

Add -4 and 4.

-15<5m<0

-15<5m<0

Divide each term in the inequality by 5.

-155<5m5<05

Divide -15 by 5.

-3<5m5<05

Cancel the common factor.

-3<5m5<05

Divide m by 1.

-3<m<05

-3<m<05

Divide 0 by 5.

-3<m<0

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