4(n-1)-5=20

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Solution for 4(n-1)-5=20 equation:


Simplifying
4(n + -1) + -5 = 20

Reorder the terms:
4(-1 + n) + -5 = 20
(-1 * 4 + n * 4) + -5 = 20
(-4 + 4n) + -5 = 20

Reorder the terms:
-4 + -5 + 4n = 20

Combine like terms: -4 + -5 = -9
-9 + 4n = 20

Solving
-9 + 4n = 20

Solving for variable 'n'.

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

Add '9' to each side of the equation.
-9 + 9 + 4n = 20 + 9

Combine like terms: -9 + 9 = 0
0 + 4n = 20 + 9
4n = 20 + 9

Combine like terms: 20 + 9 = 29
4n = 29

Divide each side by '4'.
n = 7.25

Simplifying
n = 7.25

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