3(20-x)=45

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Solution for 3(20-x)=45 equation: 


Simplifying
3(20 + -1x) = 45
(20 * 3 + -1x * 3) = 45
(60 + -3x) = 45

Solving
60 + -3x = 45

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + -3x = 45 + -60

Combine like terms: 60 + -60 = 0
0 + -3x = 45 + -60
-3x = 45 + -60

Combine like terms: 45 + -60 = -15
-3x = -15

Divide each side by '-3'.
x = 5

Simplifying
x = 5

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