3n-(5n+15)=3-(4n-7)

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Solution for 3n-(5n+15)=3-(4n-7) equation:


Simplifying
3n + -1(5n + 15) = 3 + -1(4n + -7)

Reorder the terms:
3n + -1(15 + 5n) = 3 + -1(4n + -7)
3n + (15 * -1 + 5n * -1) = 3 + -1(4n + -7)
3n + (-15 + -5n) = 3 + -1(4n + -7)

Reorder the terms:
-15 + 3n + -5n = 3 + -1(4n + -7)

Combine like terms: 3n + -5n = -2n
-15 + -2n = 3 + -1(4n + -7)

Reorder the terms:
-15 + -2n = 3 + -1(-7 + 4n)
-15 + -2n = 3 + (-7 * -1 + 4n * -1)
-15 + -2n = 3 + (7 + -4n)

Combine like terms: 3 + 7 = 10
-15 + -2n = 10 + -4n

Solving
-15 + -2n = 10 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
-15 + -2n + 4n = 10 + -4n + 4n

Combine like terms: -2n + 4n = 2n
-15 + 2n = 10 + -4n + 4n

Combine like terms: -4n + 4n = 0
-15 + 2n = 10 + 0
-15 + 2n = 10

Add '15' to each side of the equation.
-15 + 15 + 2n = 10 + 15

Combine like terms: -15 + 15 = 0
0 + 2n = 10 + 15
2n = 10 + 15

Combine like terms: 10 + 15 = 25
2n = 25

Divide each side by '2'.
n = 12.5

Simplifying
n = 12.5

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