If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12x-4x+5=45
We move all terms to the left:
12x-4x+5-(45)=0
We add all the numbers together, and all the variables
8x-40=0
We move all terms containing x to the left, all other terms to the right
8x=40
x=40/8
x=5
| 5=-4.2+v | | a-1/3=5/6 | | 4a+3-a=-72+a | | 10^(x+2)-5(10^x)+21=151 | | 4.4y=-39.6 | | 10^(x+2)-5(10)^x+21=151 | | 13+-w/7=-18 | | 2x^2+19x+45=15 | | 10^x+2-5(10)^x+21=151 | | 0.30x=15 | | 63=286-v | | 5/2x=71 | | 5x-7x=-10 | | |2x+5|-4=21 | | 206=155-u | | 7h-(3)=(1)-2h | | x=+9 | | -w+68=160 | | 5×-7x=-10 | | 4(x-2)=6x+2 | | 4^(x+1)+4^x=320 | | (45)-(3k)=117 | | w/80=35/100w= | | 3(v+2)-5v=-2 | | 41-1x=36 | | P+83=-3p-5 | | 7x+47x=17 | | (x+11)/9-7=2 | | 5-2x=3-x+13 | | 2x2+7x5=1+3x2+7x | | (10/9)x+(4/7)=(8/9)x+(5/7) | | 36-3b=-6(b-7 |