If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5(c-15)=0
We multiply parentheses
5c-75=0
We move all terms containing c to the left, all other terms to the right
5c=75
c=75/5
c=15
| X^2+12x35=0 | | 3(x+1)=6(x+2) | | 4x+8x=2 | | (2-y)-y=2(y+1) | | 8=4v+2 | | 1/2/4=1/3x | | n2=-25 | | 9x-33=3x | | 3+494.4=x | | -13n=4n-7 | | -4*1n+21n=-10 | | -79=-7+8m | | 3x+5=-2x-8+5x | | 15x–24–4x=-79 | | n3=(-8) | | -9f+79=-2 | | .333333(9x-42)-5x=-70 | | -6(x+5)=6 | | 9x+0.8=80.0 | | 4(3x-7)-2=6x+3 | | 2/5c+4=-5 | | 94=-x | | 168=20+1k(k+20) | | 3(x-4)+3=x-1 | | (4x-3)+135=180 | | 3/x+5+4/x-5=40/(x+5)(x-5) | | n+140-140=180-180 | | Xx3=-16 | | 5x-25=3x+61 | | 8=c+20 | | 3x-14-5x=-70 | | x15=13 |