4(n-90)=40

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Solution for 4(n-90)=40 equation:


Simplifying
4(n + -90) = 40

Reorder the terms:
4(-90 + n) = 40
(-90 * 4 + n * 4) = 40
(-360 + 4n) = 40

Solving
-360 + 4n = 40

Solving for variable 'n'.

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

Add '360' to each side of the equation.
-360 + 360 + 4n = 40 + 360

Combine like terms: -360 + 360 = 0
0 + 4n = 40 + 360
4n = 40 + 360

Combine like terms: 40 + 360 = 400
4n = 400

Divide each side by '4'.
n = 100

Simplifying
n = 100

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