What is 2/3 + 3m/5=31/15-2/3
→1015+9m15=3115
→10+9m15=3115
→15(10+9m)
First make all denominators 15: 10/15+9m/15=31/15-10/15. Combine like terms: (10+9m)/15=21/15. Divide by 15: .67+.6m=1.4. Subtract .67: .6m=.73. Divide by .6: M=1.22 :) hope that helps!