7x+9(x+3)=9x-4

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Solution for 7x+9(x+3)=9x-4 equation:


Simplifying
7x + 9(x + 3) = 9x + -4

Reorder the terms:
7x + 9(3 + x) = 9x + -4
7x + (3 * 9 + x * 9) = 9x + -4
7x + (27 + 9x) = 9x + -4

Reorder the terms:
27 + 7x + 9x = 9x + -4

Combine like terms: 7x + 9x = 16x
27 + 16x = 9x + -4

Reorder the terms:
27 + 16x = -4 + 9x

Solving
27 + 16x = -4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
27 + 16x + -9x = -4 + 9x + -9x

Combine like terms: 16x + -9x = 7x
27 + 7x = -4 + 9x + -9x

Combine like terms: 9x + -9x = 0
27 + 7x = -4 + 0
27 + 7x = -4

Add '-27' to each side of the equation.
27 + -27 + 7x = -4 + -27

Combine like terms: 27 + -27 = 0
0 + 7x = -4 + -27
7x = -4 + -27

Combine like terms: -4 + -27 = -31
7x = -31

Divide each side by '7'.
x = -4.428571429

Simplifying
x = -4.428571429

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