4a=7a-21

Simple and best practice solution for 4a=7a-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 4a=7a-21 equation: 


Simplifying
4a = 7a + -21

Reorder the terms:
4a = -21 + 7a

Solving
4a = -21 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
4a + -7a = -21 + 7a + -7a

Combine like terms: 4a + -7a = -3a
-3a = -21 + 7a + -7a

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

Divide each side by '-3'.
a = 7

Simplifying
a = 7

See similar equations:

| x^4+4x^2-60=0 | | -2(w+9)=-5w-45 | | 26x=90 | | 400=30x-100 | | 3x+4x+3y+4y= | | 9x-6-3x=15+4x-7 | | 12X+15y=150 | | 2=-16t^2+38t+6 | | 10x+2=3x+24 | | 3x^2-75-7=0 | | -5.5t+0.56=-1.64 | | -10x^4+6x+12=0 | | 4y+8=-4 | | 26x=40 | | -2x+16=x+1 | | ln(x-2)-ln(3)+ln(x)=0 | | 15x/5x= | | (6.1+5.8)x=x+80.3 | | x-28=5x+8 | | 3x-4+7x=2x+4 | | 7x+12=2x-6 | | x+y-z=32 | | 9x-4+18=68 | | 8-8x=23 | | a+x=2y | | 2x+23+9x-5=90 | | =3n+6 | | 10k+3=6k+-15 | | x-z=-y | | -2-6=7x+12 | | 16t^2-230t=0 | | 3t+4+7=6t+9 |

Equations solver categories