If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r/7=6/21
We move all terms to the left:
r/7-(6/21)=0
We add all the numbers together, and all the variables
r/7-(+6/21)=0
We get rid of parentheses
r/7-6/21=0
We calculate fractions
There is no solution for this equation
| 4x^2+13=209 | | (a*5)+(a*9)=7*(5+9) | | -42=-5(5=x) | | 8x/3=4/6x | | z+14/7=6 | | 5x/8-x=1/3 | | 3q-19=10q=53 | | 4n=n-93 | | M15=5x+10 | | -12a+4a+a-8a=9a | | -7*x=-56 | | -1=-2+x/10 | | 5=w-1.5w= | | -6+9x=1+20 | | 171=-9(-5+k) | | f/3=7/6 | | /5x+8=11+2x | | 17=2t+3 | | Y=8.50x+25 | | -4(2x+1)=-8x+-2 | | 7(y+3)=5y=8 | | (4x-10)°=27° | | b+2b–3=–21 | | 9/4x=5/x+11/3 | | 7(m−83)=77 | | -42=-6(5=x) | | n+8=2n+4 | | 25+2s=87 | | 20=m/8 | | 30x4000=120000 | | 3k+8=71 | | 9z-6=7z=16z-6 |