10x+20(x-4)=280

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Solution for 10x+20(x-4)=280 equation:


Simplifying
10x + 20(x + -4) = 280

Reorder the terms:
10x + 20(-4 + x) = 280
10x + (-4 * 20 + x * 20) = 280
10x + (-80 + 20x) = 280

Reorder the terms:
-80 + 10x + 20x = 280

Combine like terms: 10x + 20x = 30x
-80 + 30x = 280

Solving
-80 + 30x = 280

Solving for variable 'x'.

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

Add '80' to each side of the equation.
-80 + 80 + 30x = 280 + 80

Combine like terms: -80 + 80 = 0
0 + 30x = 280 + 80
30x = 280 + 80

Combine like terms: 280 + 80 = 360
30x = 360

Divide each side by '30'.
x = 12

Simplifying
x = 12

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