7x-5(7x+9)=123

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Solution for 7x-5(7x+9)=123 equation:


Simplifying
7x + -5(7x + 9) = 123

Reorder the terms:
7x + -5(9 + 7x) = 123
7x + (9 * -5 + 7x * -5) = 123
7x + (-45 + -35x) = 123

Reorder the terms:
-45 + 7x + -35x = 123

Combine like terms: 7x + -35x = -28x
-45 + -28x = 123

Solving
-45 + -28x = 123

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + -28x = 123 + 45

Combine like terms: -45 + 45 = 0
0 + -28x = 123 + 45
-28x = 123 + 45

Combine like terms: 123 + 45 = 168
-28x = 168

Divide each side by '-28'.
x = -6

Simplifying
x = -6

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