4-2b=25

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Solution for 4-2b=25 equation: 


Simplifying
4 + -2b = 25

Solving
4 + -2b = 25

Solving for variable 'b'.

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

Add '-4' to each side of the equation.
4 + -4 + -2b = 25 + -4

Combine like terms: 4 + -4 = 0
0 + -2b = 25 + -4
-2b = 25 + -4

Combine like terms: 25 + -4 = 21
-2b = 21

Divide each side by '-2'.
b = -10.5

Simplifying
b = -10.5

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