If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-51+b=91
We move all terms to the left:
-51+b-(91)=0
We add all the numbers together, and all the variables
b-142=0
We move all terms containing b to the left, all other terms to the right
b=142
| 4(7k+3)=-18-9k | | 2k+5k=63 | | 3-8n=2(-4+1) | | 5x –2x+7 =x | | 12(4x-15)+13x=5(x+6) | | z.5+3=-35 | | 73+42=x | | -14.1=x/6+5.1 | | -3(2x+1)=-6(x-1) | | 2(3m-6m+3m)=2m+2-4m | | X+3y=9.5 | | 6k-10=2(7k+3) | | 3(4p+1)=5(2p−2) | | 11-6k=-10k-13 | | -15h+7=-10h+57 | | k.2+9=30 | | 2x^2-2x-264=0 | | 17+h=27 | | (4)/(9)x-(2)/(3)=(1)/(3) | | -(3x/4)+2=20 | | 189+n=30 | | 4x+8(0)=56 | | 5k-(k-7)=-17 | | 10x-59=3 | | .5x−4+1=−3−.5x | | 18=9b-7(2-6) | | -3(2n-7)-n=-21 | | 62+2x+9=90 | | 8u-2=2u=8 | | 3)x+69=166 | | 8x+12=4x. | | 5)n-44=-3 |