7(1+3n)-5(1-4n)=43

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Solution for 7(1+3n)-5(1-4n)=43 equation:


Simplifying
7(1 + 3n) + -5(1 + -4n) = 43
(1 * 7 + 3n * 7) + -5(1 + -4n) = 43
(7 + 21n) + -5(1 + -4n) = 43
7 + 21n + (1 * -5 + -4n * -5) = 43
7 + 21n + (-5 + 20n) = 43

Reorder the terms:
7 + -5 + 21n + 20n = 43

Combine like terms: 7 + -5 = 2
2 + 21n + 20n = 43

Combine like terms: 21n + 20n = 41n
2 + 41n = 43

Solving
2 + 41n = 43

Solving for variable 'n'.

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

Add '-2' to each side of the equation.
2 + -2 + 41n = 43 + -2

Combine like terms: 2 + -2 = 0
0 + 41n = 43 + -2
41n = 43 + -2

Combine like terms: 43 + -2 = 41
41n = 41

Divide each side by '41'.
n = 1

Simplifying
n = 1

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