7n-28=3(3n-7)

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Solution for 7n-28=3(3n-7) equation:


Simplifying
7n + -28 = 3(3n + -7)

Reorder the terms:
-28 + 7n = 3(3n + -7)

Reorder the terms:
-28 + 7n = 3(-7 + 3n)
-28 + 7n = (-7 * 3 + 3n * 3)
-28 + 7n = (-21 + 9n)

Solving
-28 + 7n = -21 + 9n

Solving for variable 'n'.

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

Add '-9n' to each side of the equation.
-28 + 7n + -9n = -21 + 9n + -9n

Combine like terms: 7n + -9n = -2n
-28 + -2n = -21 + 9n + -9n

Combine like terms: 9n + -9n = 0
-28 + -2n = -21 + 0
-28 + -2n = -21

Add '28' to each side of the equation.
-28 + 28 + -2n = -21 + 28

Combine like terms: -28 + 28 = 0
0 + -2n = -21 + 28
-2n = -21 + 28

Combine like terms: -21 + 28 = 7
-2n = 7

Divide each side by '-2'.
n = -3.5

Simplifying
n = -3.5

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