If it's not what You are looking for type in the equation solver your own equation and let us solve it.
84-42c=3c
We move all terms to the left:
84-42c-(3c)=0
We add all the numbers together, and all the variables
-45c+84=0
We move all terms containing c to the left, all other terms to the right
-45c=-84
c=-84/-45
c=1+13/15
| 4/5m-1/5=5/20 | | -45=-6.2y+5y+7.2 | | .99x=10+.80x | | 2(6x-1)+2x+5)=120 | | -6=n/2-100 | | x+2=875x-15 | | 14x=13x+13 | | 2+4x=3x-3 | | 2(6x+1)=134 | | x+2=875x | | 33+n=64 | | 12y-57y=-24 | | 92-(5x+6)=5(x+4)+x | | 30+.25m=75 | | -3(4-6y)+7(y+5)=8 | | 5y+2+7y=74’ | | 5s+10=-10+7s | | 7(1x-9)=-63 | | -3(4-6y)+7(-y+5)=8 | | 4x-6+12=40 | | 50-5x=3.50x | | 3/4x+x=588 | | 5=10c | | 0.4(r+3.4)=0.5(r+4.2 | | 5+20x=4(5x+4) | | 14x=11x+3 | | f+4÷2=5 | | -3b=19 | | 8x-96=124-3x | | 2x^2+15=47 | | 7x+4=147-6x | | 21-6k=3+6(-1-2k) |