A. g=4 b. first you're going to subtract 1.4g from both sides; 5.4g + 4 - 1.4g = 1.4g + 20 - 1.4g then simplify it; 4g+4=20 then, you'll subtract 4 from both sides; 4g + 4 - 4 = 20 - 4 then simplify again; 4g=16 lastly, you will divide 4 from both sides; 4g/4 = 16/4 since 16/4=4, then g=4
