20+3(n-1)=-4

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Solution for 20+3(n-1)=-4 equation:


Simplifying
20 + 3(n + -1) = -4

Reorder the terms:
20 + 3(-1 + n) = -4
20 + (-1 * 3 + n * 3) = -4
20 + (-3 + 3n) = -4

Combine like terms: 20 + -3 = 17
17 + 3n = -4

Solving
17 + 3n = -4

Solving for variable 'n'.

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

Add '-17' to each side of the equation.
17 + -17 + 3n = -4 + -17

Combine like terms: 17 + -17 = 0
0 + 3n = -4 + -17
3n = -4 + -17

Combine like terms: -4 + -17 = -21
3n = -21

Divide each side by '3'.
n = -7

Simplifying
n = -7

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