what is 3.07 – 7.3h = -4(-19.7h – 11.53) solve for h

First multiply the terms in brackets by the -4:

 

3.07 - 7.3h = -4*(-19.7h) - (-4)*11.53

 

3.07 - 7.3h = 78.8h + 46.12       remembering that two negatives make a positive

 

Subtract 46.12 from both sides

-43.05 -7.3h = 78.8h

 

Add 7.3h to both sides

-43.05 = 86.1h

 

Divide both sides by 49.19

 

h = -43.05/86.1 or h = -0.5

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