If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3-4x=39
We move all terms to the left:
-3-4x-(39)=0
We add all the numbers together, and all the variables
-4x-42=0
We move all terms containing x to the left, all other terms to the right
-4x=42
x=42/-4
x=-10+1/2
| 25b=10=115 | | -22=4(v+2)-7v | | x(x+2)=272 | | 12x+9x+10x=180 | | 4(x-1)+2(x-7)=13 | | 2x+1-5x+5=90 | | y+5=130 | | t-12=38 | | x+2=130 | | 13(15m–12)=–5(m–2) | | 4n+11=59 | | 13c+10=6c+17 | | 13c+10=6c+17 | | 7f+10=87 | | 5x+20x=1*0,075 | | 2a-110=180 | | 126+9x=9(x+14) | | –5j−2=–2−4j | | 3e-8=-2 | | 7.10^n=700 | | 10k+6=8k | | 40x+60=420 | | a+20+90+a=180 | | 5x+25=3x+15 | | 3.10^2y=3600 | | 4w^2+6=38 | | 5.2^x=5/16 | | a+20-90=180 | | (−4x+9)^2−25=0 | | X=y² | | -136=-10(x+3)-6 | | 10+X=5+1,5x |