7(4g) + 3(5h) + 2 (-3g); g=1/2 , h= 1/3
7(4(1/2))+3(5(1/3))+2(-3(1/2))=7(4/2)+3(5/3)+2(-3/2)=7(2)+15/3+-6/2=14+5-3=19-3=16