3(x+15)+4(9-x)=0

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Solution for 3(x+15)+4(9-x)=0 equation:


Simplifying
3(x + 15) + 4(9 + -1x) = 0

Reorder the terms:
3(15 + x) + 4(9 + -1x) = 0
(15 * 3 + x * 3) + 4(9 + -1x) = 0
(45 + 3x) + 4(9 + -1x) = 0
45 + 3x + (9 * 4 + -1x * 4) = 0
45 + 3x + (36 + -4x) = 0

Reorder the terms:
45 + 36 + 3x + -4x = 0

Combine like terms: 45 + 36 = 81
81 + 3x + -4x = 0

Combine like terms: 3x + -4x = -1x
81 + -1x = 0

Solving
81 + -1x = 0

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + -1x = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -1x = 0 + -81
-1x = 0 + -81

Combine like terms: 0 + -81 = -81
-1x = -81

Divide each side by '-1'.
x = 81

Simplifying
x = 81

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