If it's not what You are looking for type in the equation solver your own equation and let us solve it.
20-y=31
We move all terms to the left:
20-y-(31)=0
We add all the numbers together, and all the variables
-1y-11=0
We move all terms containing y to the left, all other terms to the right
-y=11
y=11/-1
y=-11
| 37-1.5(x)=35 | | 1/2(4x+8)=-5 | | a/3+(-21)=7 | | x^2+5-115=0 | | x^2-18x+62=-10 | | 18w=144 | | z/26=5 | | 72=17x-8x | | y-2=16 | | −2=39x | | 0=x^2+5x-115 | | 6(6)-18=y | | 5+4d=49 | | x*1.2=100 | | 16.95+99c=258.51 | | (2x+9)=49 | | 10÷5+10(10)=y | | 19j=741 | | ×÷5+10(10)=y | | |2x+5|=3x+5 | | 2y+10=4y-5 | | 1.5x=380 | | x+.5x=380 | | 3y-75=120 | | 3x+3-1=36+2 | | 2c−2=4 | | 3(-3)+5=y | | 4+x+3=23 | | 28=m/27 | | 0=x^2+15x-154 | | 30-22m=19.66 | | 0.386x^2+1.665x-41.995=0 |