-40=3(n+1)+4(5-3n)

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Solution for -40=3(n+1)+4(5-3n) equation:


Simplifying
-40 = 3(n + 1) + 4(5 + -3n)

Reorder the terms:
-40 = 3(1 + n) + 4(5 + -3n)
-40 = (1 * 3 + n * 3) + 4(5 + -3n)
-40 = (3 + 3n) + 4(5 + -3n)
-40 = 3 + 3n + (5 * 4 + -3n * 4)
-40 = 3 + 3n + (20 + -12n)

Reorder the terms:
-40 = 3 + 20 + 3n + -12n

Combine like terms: 3 + 20 = 23
-40 = 23 + 3n + -12n

Combine like terms: 3n + -12n = -9n
-40 = 23 + -9n

Solving
-40 = 23 + -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.
-40 + 9n = 23 + -9n + 9n

Combine like terms: -9n + 9n = 0
-40 + 9n = 23 + 0
-40 + 9n = 23

Add '40' to each side of the equation.
-40 + 40 + 9n = 23 + 40

Combine like terms: -40 + 40 = 0
0 + 9n = 23 + 40
9n = 23 + 40

Combine like terms: 23 + 40 = 63
9n = 63

Divide each side by '9'.
n = 7

Simplifying
n = 7

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