If it's not what You are looking for type in the equation solver your own equation and let us solve it.
31=2h+21
We move all terms to the left:
31-(2h+21)=0
We get rid of parentheses
-2h-21+31=0
We add all the numbers together, and all the variables
-2h+10=0
We move all terms containing h to the left, all other terms to the right
-2h=-10
h=-10/-2
h=+5
| 290=235-u | | 5x16=6x-7 | | 19^(-4a)-8=-1 | | x-15+7x+5=180 | | 6x-44=3x-11 | | 5c=4c+12 | | 3(2x+2)=6-3x | | 3(3x+2)=3-3x | | 3(3x+2)=6-2x | | 2=4-c | | Z-1-3i=0 | | 3(3x+2)=6-3x | | 92=-4(x-5)-5x | | 4+2x=72 | | 2xx8=4x+2x6/2 | | x-11=178 | | 20x=-1+8x | | 2s+3=32 | | 2x+5(2x-5)=35 | | 9(y-6)-7y=5(3y-2) | | 14x-5=9x+20 | | 22+7x+6=9x+12 | | 32=2k+10 | | -(x+2)+3=4 | | 4x^2+784=112x | | 5(7x-8)-5x=20 | | 7/13=x/100 | | 26-n=-4(n-2) | | 7=13=x=100 | | (7=13)=(x=100) | | -4+4x=6+15x | | 1/2(12x-20)=110 |