If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21=x=72
We move all terms to the left:
21-(x)=0
We add all the numbers together, and all the variables
-1x+21=0
We move all terms containing x to the left, all other terms to the right
-x=-21
x=-21/-1
x=+21
| 5n+3=14=6n | | `18-r=42 | | 1/2=x=1/4 | | h/7+16=20 | | 5x+4=31+2× | | r+9/5=4 | | 12=4+6y | | x=7=-26 | | 20x-17=223 | | x-32=33 | | 7w-7+90+3w+7=180 | | 51=3(g-76) | | (8x+5)=(4x-17 | | 2x-7x=3-4 | | 12f+1-4=-3(1)+5(1)=11 | | 3-14r=17 | | 7.2x4.4=3168 | | z-5.2=-18.73 | | 7=3k-2 | | f*22.3=6.6 | | 126=(x)(x+3)(x+4) | | 2w-1+w-8=180 | | (4x+10)=(3x-10) | | 126=(h)(h+3)(h+4) | | -4/33=32/x | | -6+2c=16 | | 16=2x-40 | | (15-1/6n)=(1/6n-1) | | 115=(x+17) | | u-454=104 | | 43=8x–13 | | 18=2p+6 |