7n+4(3n-7)=20+7n

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Solution for 7n+4(3n-7)=20+7n equation:


Simplifying
7n + 4(3n + -7) = 20 + 7n

Reorder the terms:
7n + 4(-7 + 3n) = 20 + 7n
7n + (-7 * 4 + 3n * 4) = 20 + 7n
7n + (-28 + 12n) = 20 + 7n

Reorder the terms:
-28 + 7n + 12n = 20 + 7n

Combine like terms: 7n + 12n = 19n
-28 + 19n = 20 + 7n

Solving
-28 + 19n = 20 + 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
-28 + 19n + -7n = 20 + 7n + -7n

Combine like terms: 19n + -7n = 12n
-28 + 12n = 20 + 7n + -7n

Combine like terms: 7n + -7n = 0
-28 + 12n = 20 + 0
-28 + 12n = 20

Add '28' to each side of the equation.
-28 + 28 + 12n = 20 + 28

Combine like terms: -28 + 28 = 0
0 + 12n = 20 + 28
12n = 20 + 28

Combine like terms: 20 + 28 = 48
12n = 48

Divide each side by '12'.
n = 4

Simplifying
n = 4

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