7(3-3n)+7(8n-4)=-42

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Solution for 7(3-3n)+7(8n-4)=-42 equation:


Simplifying
7(3 + -3n) + 7(8n + -4) = -42
(3 * 7 + -3n * 7) + 7(8n + -4) = -42
(21 + -21n) + 7(8n + -4) = -42

Reorder the terms:
21 + -21n + 7(-4 + 8n) = -42
21 + -21n + (-4 * 7 + 8n * 7) = -42
21 + -21n + (-28 + 56n) = -42

Reorder the terms:
21 + -28 + -21n + 56n = -42

Combine like terms: 21 + -28 = -7
-7 + -21n + 56n = -42

Combine like terms: -21n + 56n = 35n
-7 + 35n = -42

Solving
-7 + 35n = -42

Solving for variable 'n'.

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

Add '7' to each side of the equation.
-7 + 7 + 35n = -42 + 7

Combine like terms: -7 + 7 = 0
0 + 35n = -42 + 7
35n = -42 + 7

Combine like terms: -42 + 7 = -35
35n = -35

Divide each side by '35'.
n = -1

Simplifying
n = -1

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