10x+20(43-x)=640

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Solution for 10x+20(43-x)=640 equation:


Simplifying
10x + 20(43 + -1x) = 640
10x + (43 * 20 + -1x * 20) = 640
10x + (860 + -20x) = 640

Reorder the terms:
860 + 10x + -20x = 640

Combine like terms: 10x + -20x = -10x
860 + -10x = 640

Solving
860 + -10x = 640

Solving for variable 'x'.

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

Add '-860' to each side of the equation.
860 + -860 + -10x = 640 + -860

Combine like terms: 860 + -860 = 0
0 + -10x = 640 + -860
-10x = 640 + -860

Combine like terms: 640 + -860 = -220
-10x = -220

Divide each side by '-10'.
x = 22

Simplifying
x = 22

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