3x-5(2x+4)=9

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Solution for 3x-5(2x+4)=9 equation:


Simplifying
3x + -5(2x + 4) = 9

Reorder the terms:
3x + -5(4 + 2x) = 9
3x + (4 * -5 + 2x * -5) = 9
3x + (-20 + -10x) = 9

Reorder the terms:
-20 + 3x + -10x = 9

Combine like terms: 3x + -10x = -7x
-20 + -7x = 9

Solving
-20 + -7x = 9

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + -7x = 9 + 20

Combine like terms: -20 + 20 = 0
0 + -7x = 9 + 20
-7x = 9 + 20

Combine like terms: 9 + 20 = 29
-7x = 29

Divide each side by '-7'.
x = -4.142857143

Simplifying
x = -4.142857143

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