2x-4(5x+9)=90

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Solution for 2x-4(5x+9)=90 equation:


Simplifying
2x + -4(5x + 9) = 90

Reorder the terms:
2x + -4(9 + 5x) = 90
2x + (9 * -4 + 5x * -4) = 90
2x + (-36 + -20x) = 90

Reorder the terms:
-36 + 2x + -20x = 90

Combine like terms: 2x + -20x = -18x
-36 + -18x = 90

Solving
-36 + -18x = 90

Solving for variable 'x'.

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

Add '36' to each side of the equation.
-36 + 36 + -18x = 90 + 36

Combine like terms: -36 + 36 = 0
0 + -18x = 90 + 36
-18x = 90 + 36

Combine like terms: 90 + 36 = 126
-18x = 126

Divide each side by '-18'.
x = -7

Simplifying
x = -7

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