13+N-(b)-1.962=0
na=nb*m
13*0.6-(a)*0.9-n*0.9=0
2333110
10318012
13402605
3x+y=11
3x-2y=-4
13+nb-(b)-1.962=0
13*0.6-(a)*0.9-na*0.9=0
find the prime factor of 69 by division formula
5-2.(-3)
e^-x
-4x+y=5
-4x+4y=32
13+nb-(na*m)-1.962=0
13*0.6-(na*m)*0.9-na*0.9=0
1/72+1/72+6/8+1/9+1/9 = 1