21=b-7

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


Simplifying
21 = b + -7

Reorder the terms:
21 = -7 + b

Solving
21 = -7 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
21 + -1b = -7 + b + -1b

Combine like terms: b + -1b = 0
21 + -1b = -7 + 0
21 + -1b = -7

Add '-21' to each side of the equation.
21 + -21 + -1b = -7 + -21

Combine like terms: 21 + -21 = 0
0 + -1b = -7 + -21
-1b = -7 + -21

Combine like terms: -7 + -21 = -28
-1b = -28

Divide each side by '-1'.
b = 28

Simplifying
b = 28

See similar equations:

| 3v^4-24= | | 3=3-4x | | 1.2/4.8= | | 6x^2+21=0 | | 6(-6)+9=39 | | 32x+2=21x+194 | | 2q-16=-9 | | y+63=63 | | 5=-3+4w | | 3-5(2)=-7 | | -240=6x+8(8+4x) | | -27p-6(2-6p)=4(p-5)-17 | | -16x+16x+2=-2 | | 3y-9=y-5 | | 4(6n-7)=-220 | | 4x^5+6x^4=10x^3 | | y=2x-3x-2 | | c=6.28r+s | | -210=5(8x+6) | | b-92=16 | | 3x-.75=1.5 | | 32n=-16 | | -135=-5(6-3x) | | 3x^2-60x+30=0 | | 2lnx+ln(x^2)=3 | | [4p-6]=[3p+20] | | -166=-4w | | -135=-5(8x+6) | | 5r+4=36 | | 54-14=5(x-9) | | 2x+4=116 | | 2+3(1+6a)=-121 |

Equations solver categories