3(x+5)-4(x+9)=0

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Solution for 3(x+5)-4(x+9)=0 equation:


Simplifying
3(x + 5) + -4(x + 9) = 0

Reorder the terms:
3(5 + x) + -4(x + 9) = 0
(5 * 3 + x * 3) + -4(x + 9) = 0
(15 + 3x) + -4(x + 9) = 0

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

Reorder the terms:
15 + -36 + 3x + -4x = 0

Combine like terms: 15 + -36 = -21
-21 + 3x + -4x = 0

Combine like terms: 3x + -4x = -1x
-21 + -1x = 0

Solving
-21 + -1x = 0

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -1x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = 0 + 21
-1x = 0 + 21

Combine like terms: 0 + 21 = 21
-1x = 21

Divide each side by '-1'.
x = -21

Simplifying
x = -21

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