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0x+21=21
We move all terms to the left:
0x+21-(21)=0
We add all the numbers together, and all the variables
x=0
| 23j-4=5 | | –3(k+14)=12 | | −5n=40 | | 11=b+2+6 | | (x+5)*2-6=16 | | 44+0x=44 | | 18=(1,3)x | | z4=8 | | 35-18=x-7 | | 6+r=r-5+7r+11 | | 4(x-2)-2(x-4)=32 | | 0.4x+7=11 | | 4*n=26 | | 6z+14=20 | | -4j+-2=-14 | | x/33=7/3 | | 14x+4²=16² | | 8x+3+2x=12x-2x-4+7 | | 2=0.3x-0.1x-24 | | 8x-25=9x-10 | | -8y+6=30+4y | | 38-8x=22 | | n÷10=-4 | | -8m+7m=-7-2m | | x²+9x+10=0 | | x²+9x+10=0. | | (3/4)x-5=7 | | 22+23p=-77+14p | | 45-5y=30 | | 3(x-2)^2-8=7 | | 2(4u+7)=72 | | 22=f+f |