If it's not what You are looking for type in the equation solver your own equation and let us solve it.
30+b=42
We move all terms to the left:
30+b-(42)=0
We add all the numbers together, and all the variables
b-12=0
We move all terms containing b to the left, all other terms to the right
b=12
| v-5/6=17/4 | | 1.5n-25=10 | | 5x+9+8=57 | | (b+5)=15 | | Y=3×x*3-2×x*2+4 | | 6x-10=30+2 | | 38=8e-2 | | 30x-2x+5+7=152 | | v-5/6=41/4 | | v-5/6=4/1/4 | | 11x+3=17x=39 | | 195=15y+30 | | 8a+9=3a=19 | | -30=5(c+1) | | 7x=2x=1x=200 | | x(x+6)=10x-3 | | 3+8n-4=39 | | 5x+2+118=180 | | 20x-16x-9=39 | | 9.2c+5.514=158.234 | | 5x2/3=10/3x1/3 | | -31.9+n=-33 | | 3x+5=6x32 | | 6n+2n=7n-6 | | S=4+3d | | 7x-3=-7+4+7x | | 2a+3(3a-5)=84 | | 3w+2w-5=55 | | X/6/7=x/140 | | -3x+7x+14+5x=32 | | 6(a+3)+1=37 | | x+6=2x–8,x= |