7=-5(3+10n)-10n

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Solution for 7=-5(3+10n)-10n equation:


Simplifying
7 = -5(3 + 10n) + -10n
7 = (3 * -5 + 10n * -5) + -10n
7 = (-15 + -50n) + -10n

Combine like terms: -50n + -10n = -60n
7 = -15 + -60n

Solving
7 = -15 + -60n

Solving for variable 'n'.

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

Add '60n' to each side of the equation.
7 + 60n = -15 + -60n + 60n

Combine like terms: -60n + 60n = 0
7 + 60n = -15 + 0
7 + 60n = -15

Add '-7' to each side of the equation.
7 + -7 + 60n = -15 + -7

Combine like terms: 7 + -7 = 0
0 + 60n = -15 + -7
60n = -15 + -7

Combine like terms: -15 + -7 = -22
60n = -22

Divide each side by '60'.
n = -0.3666666667

Simplifying
n = -0.3666666667

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