If it's not what You are looking for type in the equation solver your own equation and let us solve it.
30=5b+8b
We move all terms to the left:
30-(5b+8b)=0
We add all the numbers together, and all the variables
-(+13b)+30=0
We get rid of parentheses
-13b+30=0
We move all terms containing b to the left, all other terms to the right
-13b=-30
b=-30/-13
b=2+4/13
| 6x+60=10x+2 | | 6y-5y-y+5y=10 | | 9=3(3x-1)+4x-1 | | (2+2h)(4)= | | 5=29-17p | | (8x-28)=(2x-4) | | 7x-40=4.8x+26 | | 12r-5r=7 | | 12r−5r=7 | | 10+11x=-14+3 | | 4-n=-14 | | 12/u+12=15 | | -33+x=-18 | | -2(+5)=10(x-1) | | -4.9x^2+x-2=0 | | 9(13-x)-4x=5x(21-2x)+9x | | -5(X-3)=-7x+35 | | 2(x+3)=(x-3 | | 100=2x+7x | | 4−22x−7=−6 | | –15b+21+5b=–19 | | 3a^2+17a-90=0 | | 7p/7=-84/7 | | −5x+6=15 | | 2(3^(y+1))=162 | | 13−(2c+2)=2(c+2)+3c | | 25-20/m=5 | | 3d2+d−5=0 | | (3x-5)°=(x+15)° | | -9=3b–12 | | 21=7/4y | | 3.5=y-6.2 |