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 = 20x
-9 + 20x = 45 + -12x + 12x

Combine like terms: -12x + 12x = 0
-9 + 20x = 45 + 0
-9 + 20x = 45

Add '9' to each side of the equation.
-9 + 9 + 20x = 45 + 9

Combine like terms: -9 + 9 = 0
0 + 20x = 45 + 9
20x = 45 + 9

Combine like terms: 45 + 9 = 54
20x = 54

Divide each side by '20'.
x = 2.7

Simplifying
x = 2.7

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