21000=70*N+3500

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Solution for 21000=70*N+3500 equation:


Simplifying
21000 = 70N + 3500

Reorder the terms:
21000 = 3500 + 70N

Solving
21000 = 3500 + 70N

Solving for variable 'N'.

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

Add '-70N' to each side of the equation.
21000 + -70N = 3500 + 70N + -70N

Combine like terms: 70N + -70N = 0
21000 + -70N = 3500 + 0
21000 + -70N = 3500

Add '-21000' to each side of the equation.
21000 + -21000 + -70N = 3500 + -21000

Combine like terms: 21000 + -21000 = 0
0 + -70N = 3500 + -21000
-70N = 3500 + -21000

Combine like terms: 3500 + -21000 = -17500
-70N = -17500

Divide each side by '-70'.
N = 250

Simplifying
N = 250

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