30=7+N-4+8

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Solution for 30=7+N-4+8 equation:


Simplifying
30 = 7 + N + -4 + 8

Reorder the terms:
30 = 7 + -4 + 8 + N

Combine like terms: 7 + -4 = 3
30 = 3 + 8 + N

Combine like terms: 3 + 8 = 11
30 = 11 + N

Solving
30 = 11 + N

Solving for variable 'N'.

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

Add '-1N' to each side of the equation.
30 + -1N = 11 + N + -1N

Combine like terms: N + -1N = 0
30 + -1N = 11 + 0
30 + -1N = 11

Add '-30' to each side of the equation.
30 + -30 + -1N = 11 + -30

Combine like terms: 30 + -30 = 0
0 + -1N = 11 + -30
-1N = 11 + -30

Combine like terms: 11 + -30 = -19
-1N = -19

Divide each side by '-1'.
N = 19

Simplifying
N = 19

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