(n-1)+4(n-1)+8(n-1)=26

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Solution for (n-1)+4(n-1)+8(n-1)=26 equation:


Simplifying
(n + -1) + 4(n + -1) + 8(n + -1) = 26

Reorder the terms:
(-1 + n) + 4(n + -1) + 8(n + -1) = 26

Remove parenthesis around (-1 + n)
-1 + n + 4(n + -1) + 8(n + -1) = 26

Reorder the terms:
-1 + n + 4(-1 + n) + 8(n + -1) = 26
-1 + n + (-1 * 4 + n * 4) + 8(n + -1) = 26
-1 + n + (-4 + 4n) + 8(n + -1) = 26

Reorder the terms:
-1 + n + -4 + 4n + 8(-1 + n) = 26
-1 + n + -4 + 4n + (-1 * 8 + n * 8) = 26
-1 + n + -4 + 4n + (-8 + 8n) = 26

Reorder the terms:
-1 + -4 + -8 + n + 4n + 8n = 26

Combine like terms: -1 + -4 = -5
-5 + -8 + n + 4n + 8n = 26

Combine like terms: -5 + -8 = -13
-13 + n + 4n + 8n = 26

Combine like terms: n + 4n = 5n
-13 + 5n + 8n = 26

Combine like terms: 5n + 8n = 13n
-13 + 13n = 26

Solving
-13 + 13n = 26

Solving for variable 'n'.

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

Add '13' to each side of the equation.
-13 + 13 + 13n = 26 + 13

Combine like terms: -13 + 13 = 0
0 + 13n = 26 + 13
13n = 26 + 13

Combine like terms: 26 + 13 = 39
13n = 39

Divide each side by '13'.
n = 3

Simplifying
n = 3

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