2x+3(x-20)=45

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Solution for 2x+3(x-20)=45 equation: 


Simplifying
2x + 3(x + -20) = 45

Reorder the terms:
2x + 3(-20 + x) = 45
2x + (-20 * 3 + x * 3) = 45
2x + (-60 + 3x) = 45

Reorder the terms:
-60 + 2x + 3x = 45

Combine like terms: 2x + 3x = 5x
-60 + 5x = 45

Solving
-60 + 5x = 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 + 5x = 45 + 60

Combine like terms: -60 + 60 = 0
0 + 5x = 45 + 60
5x = 45 + 60

Combine like terms: 45 + 60 = 105
5x = 105

Divide each side by '5'.
x = 21

Simplifying
x = 21

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