6(4x+7)+9(8x+4)=400

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Solution for 6(4x+7)+9(8x+4)=400 equation:


Simplifying
6(4x + 7) + 9(8x + 4) = 400

Reorder the terms:
6(7 + 4x) + 9(8x + 4) = 400
(7 * 6 + 4x * 6) + 9(8x + 4) = 400
(42 + 24x) + 9(8x + 4) = 400

Reorder the terms:
42 + 24x + 9(4 + 8x) = 400
42 + 24x + (4 * 9 + 8x * 9) = 400
42 + 24x + (36 + 72x) = 400

Reorder the terms:
42 + 36 + 24x + 72x = 400

Combine like terms: 42 + 36 = 78
78 + 24x + 72x = 400

Combine like terms: 24x + 72x = 96x
78 + 96x = 400

Solving
78 + 96x = 400

Solving for variable 'x'.

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

Add '-78' to each side of the equation.
78 + -78 + 96x = 400 + -78

Combine like terms: 78 + -78 = 0
0 + 96x = 400 + -78
96x = 400 + -78

Combine like terms: 400 + -78 = 322
96x = 322

Divide each side by '96'.
x = 3.354166667

Simplifying
x = 3.354166667

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