If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4.2b=25.2
We move all terms to the left:
4.2b-(25.2)=0
We add all the numbers together, and all the variables
4.2b-25.2=0
We move all terms containing b to the left, all other terms to the right
4.2b=25.2
b=25.2/4.2
b=6+-3.5527136788005E-15/4.2
| a-8=36 | | f(1)=-26 | | 4y(2y-4)=16y+4y^2 | | 12(3-x)=5(x-3) | | 4x-2=6(x+3) | | 2x^2/3+10=138 | | 30n+30=30 | | 30n-30=30 | | (3x-1)+x=14-x | | (x+7)(2x-20)=0 | | -4(2x+8)=12 | | 3(r-2)=34 | | 3.5r=12+3.5r | | 110+41+2x-13=180 | | 49+30+8x-11=180 | | 3w+8=13.85 | | 52+58+x=180 | | 3x-6=-7x-34 | | 10+10(x+3)=-x-10(-x+1) | | 5^-2n=125 | | 3j+4j=70 | | 8x+3+8+2x=71 | | 48x-11=35+15 | | 9x/4+4=3x+17 | | 9x/4=3x+17 | | F(x)=2x^2-20x-17 | | x*105=45 | | 5(v+2)-7v=-2 | | 320=4x+4 | | -4(3x-)-(-4x+6)=2x+8 | | 100v^2-7=74 | | 2x(x=5)=0 |