x-40=7(2x+3)-9

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Solution for x-40=7(2x+3)-9 equation:


Simplifying
x + -40 = 7(2x + 3) + -9

Reorder the terms:
-40 + x = 7(2x + 3) + -9

Reorder the terms:
-40 + x = 7(3 + 2x) + -9
-40 + x = (3 * 7 + 2x * 7) + -9
-40 + x = (21 + 14x) + -9

Reorder the terms:
-40 + x = 21 + -9 + 14x

Combine like terms: 21 + -9 = 12
-40 + x = 12 + 14x

Solving
-40 + x = 12 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
-40 + x + -14x = 12 + 14x + -14x

Combine like terms: x + -14x = -13x
-40 + -13x = 12 + 14x + -14x

Combine like terms: 14x + -14x = 0
-40 + -13x = 12 + 0
-40 + -13x = 12

Add '40' to each side of the equation.
-40 + 40 + -13x = 12 + 40

Combine like terms: -40 + 40 = 0
0 + -13x = 12 + 40
-13x = 12 + 40

Combine like terms: 12 + 40 = 52
-13x = 52

Divide each side by '-13'.
x = -4

Simplifying
x = -4

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