If it's not what You are looking for type in the equation solver your own equation and let us solve it.
31-13n=211
We move all terms to the left:
31-13n-(211)=0
We add all the numbers together, and all the variables
-13n-180=0
We move all terms containing n to the left, all other terms to the right
-13n=180
n=180/-13
n=-13+11/13
| -35=5u+4 | | 36-8k=16-3k | | 2x-4(4x-12)=132 | | -7x+32-x+16=180 | | 22+7c=10c-5 | | 7m-17=60m | | X+x+x+26+94=360 | | 5x+13=2(x-1) | | (7x-10)+2x+1)=90 | | 15=4-y/3 | | x*(4/3x)=192 | | 12x-24=1/4(24x+48) | | 20. -7+4n=9 | | 6n-5=10n+11 | | 0=x^2-0.25 | | 0=8t^2-6t+1 | | 70-4x=90 | | x-5.4=8.36 | | 5(2x-5=-12 | | p-7-3=5 | | 135=3n*5 | | t+(-8)=26 | | 41=8r-7 | | (2x-20)(x+15)=180 | | 4a+11=27 | | 2n+7=4n | | 1000(6x-10)=40(395+100x | | 11.15=w-8.15 | | 4=3a-6=43 | | 5(x-3)=-4(2x-3) | | 6x+10-10+8=180 | | (2x-7)(5x+12)=0 |