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21x=6^x
We move all terms to the left:
21x-(6^x)=0
| 90/1.25=x/2 | | 3*x²-4*x=7 | | X/2+x=160 | | -109.2/c=184.9 | | 8-2=5a+7 | | 3u+8=40 | | 80z-14=0 | | -4x^2-7x-9x=2 | | 0.35(x+4)=0.25(x6) | | 3b +8=13 | | 16/21=x/80 | | (5+x)*10=17*x | | ((x+4)/(8-x))=2 | | 25=0.15t+2.50 | | -4-3x=4(x-2)-8x | | (x-4)^3=24 | | q+81/2=-3 | | 3(2x+7)=-6(4-x) | | 32-3x+18=5x-30 | | -30=-6(2n-1) | | 7b–12=9 | | 2p×5=20 | | 13x+15/6=5 | | w/8-80=-74 | | k,5+2=0 | | 14=4+8x | | 18-p=12 | | 10(n-89)=90 | | 3(4x-1)+9-x=2x+8=9x | | 4(x+7)+8x=112 | | 14+4y-10=180 | | 0.5x+0.10x*9=4.75 |