20x+10(x+4)=400

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Solution for 20x+10(x+4)=400 equation:


Simplifying
20x + 10(x + 4) = 400

Reorder the terms:
20x + 10(4 + x) = 400
20x + (4 * 10 + x * 10) = 400
20x + (40 + 10x) = 400

Reorder the terms:
40 + 20x + 10x = 400

Combine like terms: 20x + 10x = 30x
40 + 30x = 400

Solving
40 + 30x = 400

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + 30x = 400 + -40

Combine like terms: 40 + -40 = 0
0 + 30x = 400 + -40
30x = 400 + -40

Combine like terms: 400 + -40 = 360
30x = 360

Divide each side by '30'.
x = 12

Simplifying
x = 12

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