21x=840

Simple and best practice solution for 21x=840 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 21x=840 equation: 



21x=840

We move all terms to the left:

21x-(840)=0

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

21x=840

x=840/21

x=40

See similar equations:

| 2x-9÷3x+4=-1÷16 | | x+-4/5+6/5=0 | | 15+2x=810-3x | | -17j=3-16j | | 48x=240 | | 100/x=2.75 | | 2x-9/3x+4=-1/16 | | 4.32+4f=6.48 | | F(x)=50^x | | 3=4h-9 | | -4/5+6/5=x | | x-31=2x-98 | | 0.0318=4.4x+0 | | 57=f-134 | | q-131=29 | | 16=9/x^2 | | -15=18k=19k | | 2+4t=4t+2 | | 7g=21 | | 23b-0.25=3.20 | | 6x+12+12-4x=30 | | 9b=8b-14 | | h/4=-9 | | 188-6x^2=32 | | 4j+9=57 | | 81x^2−100=0 | | 14b+9b-0.25$=3.20$ | | 1/4x-1/8=7/8+1-2x | | 81y^2-100=0 | | k-23=14 | | -12=8h=7h | | a/10+(-2)=8 |

Equations solver categories