If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x+21=177
We move all terms to the left:
x+21-(177)=0
We add all the numbers together, and all the variables
x-156=0
We move all terms containing x to the left, all other terms to the right
x=156
| 11x+4=9x+18 | | 50-x=18 | | n=10-3n | | 6-7x=-24+x | | b+3.6=4.8 | | x+42=76 | | 0,6+0,3x=1,4-3,7x | | 2x+4=7x+19 | | -1-(x-4)=5(x-3) | | 2x3-6x2+8x=0. | | 4x–17=–2x–5 | | D=25-0.75x | | 7x+4=-12–x | | 6. 7x+4=-12–x | | 1/3y+4=17-1/6y | | 3x=441 | | 0,25x-1=1,25 | | 7÷2=c/(7÷8) | | 90-y=2y | | $3x=−4x−35 | | -x-25=50 | | 13x+7=8x+20 | | 2x^2+170x+86=0 | | $$3x=−4x−35 | | 2(y+2)-3(y-3)=y+7 | | -2x^2-170x-86=0 | | -x+25=-50 | | 21x+7=9x–17 | | 6y+12=54 | | 9x²=324 | | (x+1)^2-4x^2=0 | | 14x-4x=10x |