If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4.25x+2.25(x-100)+.3(x-300)-(-400)=0
We add all the numbers together, and all the variables
4.25x+2.25(x-100)+.3(x-300)+400=0
We multiply parentheses
4.25x+2.25x+0.3x-225-90+400=0
We add all the numbers together, and all the variables
6.8x+85=0
We move all terms containing x to the left, all other terms to the right
6.8x=-85
x=-85/6.8
x=-12+1/2
| 2×n+10=160 | | n+37=3n-41 | | 14+4x=3x+20 | | n(n-1)=220 | | 3p-2=-14-7p | | 3-5y=-18 | | m^2-9m+36=0 | | 4x+9=51−3x | | 5x=3.8=3x+2.0 | | -1+2x=10x+5 | | 2x-2+3x-6=x-4 | | 2x-4=(2x-9)+(2x-9) | | 43(n+4)=774 | | 8^2+6^x+4X=0 | | 3x+5x=7x+135 | | 3y(10+7)=55 | | 55(1-3y)-2(10-y)=-10y | | 3x-6+2x=-31 | | 6(8+6x)-8=30+7x | | 0.913=x/12 | | 6(8+6k)-8=30+7k | | 3x+221=360 | | -2/8x+1/6=3/7 | | 4/9x=4/8 | | z*8=49/9 | | (8x-3)(3x+3)=0 | | z*8=16.016 | | z*8=10.016 | | (8x-5)(7x+4)=0 | | z*8=10.2 | | 6(3k+10)=4k | | z*8=92 |