If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3x+5x+16=0
We add all the numbers together, and all the variables
8x+16=0
We move all terms containing x to the left, all other terms to the right
8x=-16
x=-16/8
x=-2
| 24x-9=0 | | F=-48n+21,000, | | 2x-(1/x)=3 | | 3y²-5=23 | | 4b-5=9 | | 0=0.12x+39.95 | | 6(x+9)+7=6x+8 | | 2x-5(3x-7)=9 | | f(5)=16 | | 3(s+2)=2(s+7)+4 | | 3.1+5.1r=-22.919+10.41 | | 3a²-5=23 | | 10+x/3=23 | | 9e–7=7e–11 | | 24+7a=6(3a-7) | | -1+k/5=7 | | -7x+10=2x+73 | | 3/x-3=6/7 | | 10/(p+2)=4/3 | | -6(x+7)-(1+9x)=16x | | 5.4=9.3/x | | (2x-10)=(x+4) | | 6-7x=5x-10x+2 | | 0=5x^2+2x-1 | | 2(6)+y-4=15 | | x^2+7x-66=0 | | 8=w+14 | | (4c-2)/3=8 | | 5/7x-3=1/7x+9 | | 5m+7=2m | | 2y^2-19y+24=0 | | 4+4n=7n+4 |