3x+1.2x=21

Simple and best practice solution for 3x+1.2x=21 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 3x+1.2x=21 equation: 


Simplifying
3x + 1.2x = 21

Combine like terms: 3x + 1.2x = 4.2x
4.2x = 21

Solving
4.2x = 21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '4.2'.
x = 5

Simplifying
x = 5

See similar equations:

| 21x^3-15x^2+28x-20=0 | | r^2-10tw+5wr-2tr=0 | | 2(x-3)-4(3x+4)=-11(x+2)-3 | | 72-4x=2x-6 | | 4(c-3)=2+3c | | X+3.42=72 | | 0.8(8x+6)=1.9-(x-3) | | -28x^3-7x^2=0 | | 4y+8-y=4+2y-7 | | X+3.1=-6.25 | | 2x+14=94-6x | | b^2+3b=0 | | 25s^2-10s=0 | | (-9xy)-(-7xy)= | | X-4.52=-19 | | 3[2-(3j-6)]+4[6j-(1-2j)]=4-5j | | 3xy-(2x+4xy)= | | 5r+6-2r=7r | | 6(t-2)+2(t-53)=2 | | 1.33x=40 | | 7t^2+3t=0 | | 10=27t-t^3 | | 8x-7x+6-3x=8x+3x-20 | | 20-t^2=0 | | 138x-72=0 | | (y-7)-(y+5)=2y | | 170=30(90+3) | | X^4-2X^3-8X^2+12x-16=0 | | 18=A+B(3) | | 2(T-6)+6T=4(2t+4)-12 | | 40h-[24-(6h+8)-(5-2h)]=3-(8h-12) | | 6A=B |

Equations solver categories