If it's not what You are looking for type in the equation solver your own equation and let us solve it.
300-72=3x
We move all terms to the left:
300-72-(3x)=0
We add all the numbers together, and all the variables
-3x+228=0
We move all terms containing x to the left, all other terms to the right
-3x=-228
x=-228/-3
x=+76
| -z=z-10 | | 0.02(5-x)0.03=0.5(7x+x) | | -9-10u=-5-9u | | 8-9d=-10d | | 3x+7=10-7 | | 2(x+1)=-7x+11 | | 2x+11=x-4 | | 6-2q=-q | | 2x+3(+-10)=45 | | 11x-8=2x+10 | | 144-u=248 | | r=-10+r | | (-3)/n=(6)/n-1 | | y²-8=2y | | 11x=+2+3+8 | | 0.4*(x-3)-4=0.8+x | | 8u-3u-u=16 | | -0.5x+5=10 | | 18x+10=12x+13 | | 114=m-98 | | 10x+1x=+4+6 | | (4+y)^2-(4+y)-20=0 | | 4-y=7-3 | | 4a+a+2a=7 | | 18x-17x=9 | | 20=8a-4a | | 6d-3d=3 | | 6/x−9=5 | | 10=9s-4s | | x+3/8=-33 | | 3/5t+7=(-8) | | 5u=2u+4 |