-3x+7=21

Simple and best practice solution for -3x+7=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+7=21 equation: 


Simplifying
-3x + 7 = 21

Reorder the terms:
7 + -3x = 21

Solving
7 + -3x = 21

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -3x = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -3x = 21 + -7
-3x = 21 + -7

Combine like terms: 21 + -7 = 14
-3x = 14

Divide each side by '-3'.
x = -4.666666667

Simplifying
x = -4.666666667

See similar equations:

| y+7=2y-7 | | x^6-9x^4-81x^2+729=0 | | 9x+5-3x-9= | | x^2+7x-1260=0 | | x^2+3=3-2 | | 40x^2-39x-40=0 | | 0.75x^2+2.65x-14.7=0 | | (x+3)=x-3 | | Q=160 | | =29x^2-18x | | x^3-xy^2+x^2y-y^3=0 | | (4x+5)(3x-7)= | | 16x^4a-y^8a=0 | | f(4)=12-2 | | r^2=10cos(2x) | | 50=-3x+14 | | 2a^2-46+252=0 | | 5x+x-4=20 | | 3(x+2)+7=10 | | 6=x | | 9a+4= | | 4x+7+17=120 | | x^2-16x+59=0 | | 22x+18y=90 | | f(4)=3(4)-2 | | 2+-3= | | 2x^2+3x-280=0 | | 8u-3u+7=-23 | | x^2+19x-142=0 | | y^3-14y^2+48y=0 | | 6(Y-4)-4(5y+1)=3(y-2)-4(2y+1) | | 2(2x+3)=x-(-4x+1) |

Equations solver categories