28=21b

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Solution for 28=21b equation:


Simplifying
28 = 21b

Solving
28 = 21b

Solving for variable 'b'.

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

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

Combine like terms: 21b + -21b = 0
28 + -21b = 0

Add '-28' to each side of the equation.
28 + -28 + -21b = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -21b = 0 + -28
-21b = 0 + -28

Combine like terms: 0 + -28 = -28
-21b = -28

Divide each side by '-21'.
b = 1.333333333

Simplifying
b = 1.333333333

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