4(5-b)=18

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Solution for 4(5-b)=18 equation:


Simplifying
4(5 + -1b) = 18
(5 * 4 + -1b * 4) = 18
(20 + -4b) = 18

Solving
20 + -4b = 18

Solving for variable 'b'.

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

Add '-20' to each side of the equation.
20 + -20 + -4b = 18 + -20

Combine like terms: 20 + -20 = 0
0 + -4b = 18 + -20
-4b = 18 + -20

Combine like terms: 18 + -20 = -2
-4b = -2

Divide each side by '-4'.
b = 0.5

Simplifying
b = 0.5

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