10x-[2x+9]=-3[15-4x]

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Solution for 10x-[2x+9]=-3[15-4x] equation:


Simplifying
10x + -1[2x + 9] = -3[15 + -4x]

Reorder the terms:
10x + -1[9 + 2x] = -3[15 + -4x]
10x + [9 * -1 + 2x * -1] = -3[15 + -4x]
10x + [-9 + -2x] = -3[15 + -4x]

Reorder the terms:
-9 + 10x + -2x = -3[15 + -4x]

Combine like terms: 10x + -2x = 8x
-9 + 8x = -3[15 + -4x]
-9 + 8x = [15 * -3 + -4x * -3]
-9 + 8x = [-45 + 12x]

Solving
-9 + 8x = -45 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-9 + 8x + -12x = -45 + 12x + -12x

Combine like terms: 8x + -12x = -4x
-9 + -4x = -45 + 12x + -12x

Combine like terms: 12x + -12x = 0
-9 + -4x = -45 + 0
-9 + -4x = -45

Add '9' to each side of the equation.
-9 + 9 + -4x = -45 + 9

Combine like terms: -9 + 9 = 0
0 + -4x = -45 + 9
-4x = -45 + 9

Combine like terms: -45 + 9 = -36
-4x = -36

Divide each side by '-4'.
x = 9

Simplifying
x = 9

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