If it's not what You are looking for type in the equation solver your own equation and let us solve it.
10^x=7.21
We move all terms to the left:
10^x-(7.21)=0
We add all the numbers together, and all the variables
10^x-7.21=0
We move all terms containing x to the left, all other terms to the right
10^x=7.21
x=7.21/1
x=7.21
| 5/7(x)+4=8 | | -1-2y=-28 | | 6x-8=6x+7-15 | | -8=-5m-3m | | -4x+6(x-7)=-34 | | Y=5-xx=-2 | | -3x+5(x+7)=31 | | 100000=300000*(1/(1+r)^10 | | -7x-7=-11 | | 125-2x=89+x | | 4p+10=7p+1 | | -7x-1=-11 | | 3x5=3x-11 | | 11x-4=10-x | | 3+3p-4=-19 | | 3x+2(x-8)=-21 | | 7/9k=3/5 | | y-26=12 | | 5x+x-3=-3x+10x | | 0.3=1.3x | | 1g-10=3g+10 | | 4x+14=x+20 | | 1.6x+2.7=1 | | 7a-4=9a | | 11+4x=21 | | (a-1)³=0 | | G-10=3g+10 | | 2x2=3x+60 | | 3+3p-4=19 | | 18.45=4.50p+13.5 | | (2b-30)*7=8b | | 3x+4=28/x^2 |