If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2/3/n=7/21
We move all terms to the left:
2/3/n-(7/21)=0
We can not solve this equation
| 7(x-8)=¥ | | 68=3t-28 | | w-7.2=2.95 | | 2x+60+4x+3x-50=180 | | 3x/4x=21 | | -4(v-1)=-7(v-7) | | x+2.52=9.69 | | -5/3+x=5/3 | | (x+34)+(6x+4)+(4x+10)=180 | | 4x+9=109-x | | 6(-x-2)=-60 | | (x+34)+(6x+4)+(4x+10)=180, | | 9x-11+7x+6=180 | | X/2+3x/8=20 | | X-20+4x+10+2x-20=180 | | y-4.7=8.9 | | 42=3y+y | | X-20.7=9.5x | | (x+1)^2-4=192 | | 3a/2=6/5 | | x+–981=–600 | | q/2=1.42 | | 2(z+8)-8z=8 | | (6a+10)°=(3a+55)° | | u-8.87=4.2 | | 78=6-3x-2x | | (q-5)×6=18 | | v+–981=–600 | | 24/x+3+24/x-3=6 | | 0.5=1.25x | | 10z+20/9=5 | | 9c-1=4c-5 |