3x+9(x-5)=8(x-7)

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Solution for 3x+9(x-5)=8(x-7) equation:


Simplifying
3x + 9(x + -5) = 8(x + -7)

Reorder the terms:
3x + 9(-5 + x) = 8(x + -7)
3x + (-5 * 9 + x * 9) = 8(x + -7)
3x + (-45 + 9x) = 8(x + -7)

Reorder the terms:
-45 + 3x + 9x = 8(x + -7)

Combine like terms: 3x + 9x = 12x
-45 + 12x = 8(x + -7)

Reorder the terms:
-45 + 12x = 8(-7 + x)
-45 + 12x = (-7 * 8 + x * 8)
-45 + 12x = (-56 + 8x)

Solving
-45 + 12x = -56 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-45 + 12x + -8x = -56 + 8x + -8x

Combine like terms: 12x + -8x = 4x
-45 + 4x = -56 + 8x + -8x

Combine like terms: 8x + -8x = 0
-45 + 4x = -56 + 0
-45 + 4x = -56

Add '45' to each side of the equation.
-45 + 45 + 4x = -56 + 45

Combine like terms: -45 + 45 = 0
0 + 4x = -56 + 45
4x = -56 + 45

Combine like terms: -56 + 45 = -11
4x = -11

Divide each side by '4'.
x = -2.75

Simplifying
x = -2.75

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