43(9-3x)+39(9-3x)=25(3x-9)

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Solution for 43(9-3x)+39(9-3x)=25(3x-9) equation:


Simplifying
43(9 + -3x) + 39(9 + -3x) = 25(3x + -9)
(9 * 43 + -3x * 43) + 39(9 + -3x) = 25(3x + -9)
(387 + -129x) + 39(9 + -3x) = 25(3x + -9)
387 + -129x + (9 * 39 + -3x * 39) = 25(3x + -9)
387 + -129x + (351 + -117x) = 25(3x + -9)

Reorder the terms:
387 + 351 + -129x + -117x = 25(3x + -9)

Combine like terms: 387 + 351 = 738
738 + -129x + -117x = 25(3x + -9)

Combine like terms: -129x + -117x = -246x
738 + -246x = 25(3x + -9)

Reorder the terms:
738 + -246x = 25(-9 + 3x)
738 + -246x = (-9 * 25 + 3x * 25)
738 + -246x = (-225 + 75x)

Solving
738 + -246x = -225 + 75x

Solving for variable 'x'.

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

Add '-75x' to each side of the equation.
738 + -246x + -75x = -225 + 75x + -75x

Combine like terms: -246x + -75x = -321x
738 + -321x = -225 + 75x + -75x

Combine like terms: 75x + -75x = 0
738 + -321x = -225 + 0
738 + -321x = -225

Add '-738' to each side of the equation.
738 + -738 + -321x = -225 + -738

Combine like terms: 738 + -738 = 0
0 + -321x = -225 + -738
-321x = -225 + -738

Combine like terms: -225 + -738 = -963
-321x = -963

Divide each side by '-321'.
x = 3

Simplifying
x = 3

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