If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-9-4x=-21-7x
We move all terms to the left:
-9-4x-(-21-7x)=0
We add all the numbers together, and all the variables
-4x-(-7x-21)-9=0
We get rid of parentheses
-4x+7x+21-9=0
We add all the numbers together, and all the variables
3x+12=0
We move all terms containing x to the left, all other terms to the right
3x=-12
x=-12/3
x=-4
| (2x-1)/4=(3X+5)/9 | | 13+4u=-17 | | 4b-25=3b-54 | | (2x-1)/4=(3X+5)/9= | | 4x-3(x-4)=17 | | 24x+6=8x+2 | | x2-10=30x | | 13u+4=-17 | | 33=-2x=7 | | -14u+-14u+3u-5u+14u=18 | | 36=2x^2+3x | | 9b-24=2b+4 | | 7x—6—3x=6 | | 6y=5y+20 | | 4x+9=57x= | | 24x+6=21x+9 | | -48=h-12 | | 4u+90=10u+60 | | -2x-6+9=90 | | c2+10c+16=0 | | 4(x+4)=2x+52 | | 3d+18=39-4d | | (9x−2)2−(x−15)2=0 | | V+44=v | | 15y-6=9y+18 | | 3n+2=41.n | | 5/11n-10.7=12.3 | | (5x-4)+94=180 | | –3x=2x–1 | | 52+78+(56+x)=180 | | 4c-70=2c | | 2/x+2=6/7 |