42=21+3x

Simple and best practice solution for 42=21+3x 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 42=21+3x equation: 



42=21+3x

We move all terms to the left:

42-(21+3x)=0

We add all the numbers together, and all the variables

-(3x+21)+42=0

We get rid of parentheses

-3x-21+42=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

See similar equations:

| 5/2x+5=1x | | x−17=19 | | F(1/2)=1/2t-3 | | F(-2)=1/2t-3 | | 4=h25 | | W+2w+6+w+2w+6=288 | | 5p+6=1 | | F(-3)=1/2t-3 | | 3=-c-7 | | 7+0.20p=5+0.30p= | | F(1/2)=-3x-4 | | y=10²+4 | | -2(-7x+8)-2x=4(x-4)-2 | | 3x+13/5=8 | | 4=h×25 | | 7(2x+4)=-3(5x-9) | | 7+8(x+4)=119 | | 9x-4-4x=-5 | | 8=½×h(8+17) | | (10/x)=(7/6x)+1 | | 3t^2-15t+3=3 | | 800-6m=1000-10m=50 | | -27+5x=4(5+8x)+7 | | 8=1/2×h(8+17) | | 10/x=7/6x+1 | | 3(w+4)=8w=22 | | 10x=76x+1 | | 189=7x+7(2x+12) | | X=-12x+51 | | 113=5x+7(2x-11) | | X3-4x2-5=0 | | 212+x=254 |

Equations solver categories