840=-21f

Simple and best practice solution for 840=-21f equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 840=-21f equation: 



840=-21f

We move all terms to the left:

840-(-21f)=0

We get rid of parentheses

21f+840=0

We move all terms containing f to the left, all other terms to the right

21f=-840

f=-840/21

f=-40

See similar equations:

| 2(x-2)+6=3 | | 2|x-2|+6=3 | | x²+14x+15=0 | | 6(5x-2)=48+8 | | 70=2(x+7)+2(x) | | (b-9)=7 | | –4(u–9)=32 | | (m+3)+3m=8 | | (x+6)=-2 | | 4x+10+7x+6=180 | | X=234/y | | 4x+10+7x+6+6x+3=180 | | -5a+3-8a=34 | | 6y+2-9=-31 | | `x^{2}-1=120` | | -7h+5-6=-17 | | x^{2}-1=120` | | 8c+9+2c=29 | | -5v-6+9v=29 | | 30t=22+80 | | x/2=88.5 | | -3(x-4)=-2(8x+1) | | 3f-2f=-35 | | -2s-3s=19 | | -5z-9+8z=-23 | | 5x–(11+17)=4x-12 | | 2x+25=7+4 | | 3/2b+8+1/2b=12+2b | | 11x-2=5x+4 | | 7-9x=-29x= | | 4m2=17m-15 | | 3(2c+7)-3c=4(c+5) |

Equations solver categories