4(75-b)=45

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Solution for 4(75-b)=45 equation: 


Simplifying
4(75 + -1b) = 45
(75 * 4 + -1b * 4) = 45
(300 + -4b) = 45

Solving
300 + -4b = 45

Solving for variable 'b'.

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

Add '-300' to each side of the equation.
300 + -300 + -4b = 45 + -300

Combine like terms: 300 + -300 = 0
0 + -4b = 45 + -300
-4b = 45 + -300

Combine like terms: 45 + -300 = -255
-4b = -255

Divide each side by '-4'.
b = 63.75

Simplifying
b = 63.75

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