(40x+72)-(4-2x)=-9

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Solution for (40x+72)-(4-2x)=-9 equation:


Simplifying
(40x + 72) + -1(4 + -2x) = -9

Reorder the terms:
(72 + 40x) + -1(4 + -2x) = -9

Remove parenthesis around (72 + 40x)
72 + 40x + -1(4 + -2x) = -9
72 + 40x + (4 * -1 + -2x * -1) = -9
72 + 40x + (-4 + 2x) = -9

Reorder the terms:
72 + -4 + 40x + 2x = -9

Combine like terms: 72 + -4 = 68
68 + 40x + 2x = -9

Combine like terms: 40x + 2x = 42x
68 + 42x = -9

Solving
68 + 42x = -9

Solving for variable 'x'.

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

Add '-68' to each side of the equation.
68 + -68 + 42x = -9 + -68

Combine like terms: 68 + -68 = 0
0 + 42x = -9 + -68
42x = -9 + -68

Combine like terms: -9 + -68 = -77
42x = -77

Divide each side by '42'.
x = -1.833333333

Simplifying
x = -1.833333333

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