21-d=13

Simple and best practice solution for 21-d=13 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-d=13 equation:


Simplifying
21 + -1d = 13

Solving
21 + -1d = 13

Solving for variable 'd'.

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

Add '-21' to each side of the equation.
21 + -21 + -1d = 13 + -21

Combine like terms: 21 + -21 = 0
0 + -1d = 13 + -21
-1d = 13 + -21

Combine like terms: 13 + -21 = -8
-1d = -8

Divide each side by '-1'.
d = 8

Simplifying
d = 8

See similar equations:

| 12-2x+13=10-8x | | 31x+12y=723 | | .9x+.1(x-560)=.8(560) | | 13y+(2y+3)+13x= | | 4x(x+14)=0 | | 12x+8=11x | | x^4-10x^3-21x^2-36x-180=0 | | 3(a+2)=5(a-1) | | m^2+2mn-15n^2=0 | | (4p-4q+8r)-6(-4p+3q-4r)= | | 2(8b-6)=32-7b | | 2c+1=4c-4 | | 10(3x-1)=65 | | ln(3x+4)=2.3 | | (3x+3)(x-2)=0 | | ab=2x+8 | | 3x-5=20x+4 | | 7.2d=4 | | 3x+1(x+4)=0 | | B-4.5=1.2 | | 4y=42 | | 4(w+3)-6w=32 | | -19=k+14+2k | | lnx+lnx+4=5 | | 8+(2+y)+14y= | | 4x+2y+8=58 | | 0.5(4c+8)=28 | | 6q=33 | | 3x+150=510 | | 4(w+3)-6=32 | | 8-x+3=9 | | Z^2+7z-8=0 |

Equations solver categories