If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3c=-9c
We move all terms to the left:
3c-(-9c)=0
We get rid of parentheses
3c+9c=0
We add all the numbers together, and all the variables
12c=0
c=0/12
c=0
| -9+12s=19+16s-2s | | 990=780×100+1270×(x-100) | | 8v=9v-17 | | 6/18=3/y | | 8c-6=9c | | -6n-9-4=3-10n | | -2x²+3x=0 | | 8p+7=10p-9 | | -36=-6u+2(u-2) | | 3z-7=2z | | b/2+9=20 | | -7t-2=(-4t)-2 | | 6x+27=(2x+9) | | 10(x-2)+5=8x+7 | | 7t-2t=(-4t)-2 | | w-1.64=3.91 | | 21x+19=180 | | -40=-u/2 | | 7j=(-9)+6j | | y-1.6=9.55 | | -6+s=(-s) | | 7/8-3k-1/2/k=1/4 | | -10-8c=(-10c)+10 | | 141.5/x-131.5=0 | | 7s=(-4)+6s | | (u-3)=(u+8) | | 9w+5=-40 | | 5x+7=x+13 | | 19d=(-18)+17d | | v/6-1=-8 | | 3x+32=121 | | 3+3q=18+4q |