Guys! ! i need that beforr 10: 15

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Can someone me and plz do the problem

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules