40=-10(n-9)

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Solution for 40=-10(n-9) equation:


Simplifying
40 = -10(n + -9)

Reorder the terms:
40 = -10(-9 + n)
40 = (-9 * -10 + n * -10)
40 = (90 + -10n)

Solving
40 = 90 + -10n

Solving for variable 'n'.

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

Add '10n' to each side of the equation.
40 + 10n = 90 + -10n + 10n

Combine like terms: -10n + 10n = 0
40 + 10n = 90 + 0
40 + 10n = 90

Add '-40' to each side of the equation.
40 + -40 + 10n = 90 + -40

Combine like terms: 40 + -40 = 0
0 + 10n = 90 + -40
10n = 90 + -40

Combine like terms: 90 + -40 = 50
10n = 50

Divide each side by '10'.
n = 5

Simplifying
n = 5

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