7(4+5n)-n=8(2+5n)

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Solution for 7(4+5n)-n=8(2+5n) equation:


Simplifying
7(4 + 5n) + -1n = 8(2 + 5n)
(4 * 7 + 5n * 7) + -1n = 8(2 + 5n)
(28 + 35n) + -1n = 8(2 + 5n)

Combine like terms: 35n + -1n = 34n
28 + 34n = 8(2 + 5n)
28 + 34n = (2 * 8 + 5n * 8)
28 + 34n = (16 + 40n)

Solving
28 + 34n = 16 + 40n

Solving for variable 'n'.

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

Add '-40n' to each side of the equation.
28 + 34n + -40n = 16 + 40n + -40n

Combine like terms: 34n + -40n = -6n
28 + -6n = 16 + 40n + -40n

Combine like terms: 40n + -40n = 0
28 + -6n = 16 + 0
28 + -6n = 16

Add '-28' to each side of the equation.
28 + -28 + -6n = 16 + -28

Combine like terms: 28 + -28 = 0
0 + -6n = 16 + -28
-6n = 16 + -28

Combine like terms: 16 + -28 = -12
-6n = -12

Divide each side by '-6'.
n = 2

Simplifying
n = 2

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