Question 15117
so you subtract 4g from both sides
7g+7-4g=4g-2-4g
this boils down to 
3g-7=-2
now add 7 to both sides
3g-7+7=-2+7
this boils down to 
3g=5
divide both sides by 3
3g/3=5/3
this boils down to g=5/3
this