21=7(x-4)

Simple and best practice solution for 21=7(x-4) 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 21=7(x-4) equation:


Simplifying
21 = 7(x + -4)

Reorder the terms:
21 = 7(-4 + x)
21 = (-4 * 7 + x * 7)
21 = (-28 + 7x)

Solving
21 = -28 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
21 + -7x = -28 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + -7x = -28 + 0
21 + -7x = -28

Add '-21' to each side of the equation.
21 + -21 + -7x = -28 + -21

Combine like terms: 21 + -21 = 0
0 + -7x = -28 + -21
-7x = -28 + -21

Combine like terms: -28 + -21 = -49
-7x = -49

Divide each side by '-7'.
x = 7

Simplifying
x = 7

See similar equations:

| 5e^3x-2=7 | | x(x-.03)=59.521 | | 0=-16t^2+48t+48 | | 5n-3+2=18 | | 3.5/m=16/32 | | 3(n+1)-2=16 | | 0.18y+0.06(y+6000)=2280 | | 3x-4x+1=4 | | 32.1=5.4x+5.1 | | 0.55p+11.94=6.99 | | =y^3+y^2-4y+4 | | x-17=8(2x+3)-11 | | 12x-16=8x+14 | | 2(x+4)=-20 | | -3/4r=-21/8 | | 10h-29=41 | | 0.55p-6.99=11.94 | | 3x+2.7=8.1 | | 7-wx=vx+1 | | x^2-9x+20=(x-4)(x+5) | | 0.55p+6.99=11.49 | | 7/9=c/36 | | x^2-.03x-59.521=0 | | (2x)/3-8/3=x | | 3x-25=4x-27 | | 15/120=t/16 | | log(x+5)+log(x+2)=1 | | (6)(25x)(1.5)=9 | | -4(p-6)+2p=8 | | 2t-12-3t=-2 | | 1000x^2-30x-59521=0 | | 9(2c+4)=54 |

Equations solver categories