-1(1-5n)-4(-5n-2)=-18

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Solution for -1(1-5n)-4(-5n-2)=-18 equation:


Simplifying
-1(1 + -5n) + -4(-5n + -2) = -18
(1 * -1 + -5n * -1) + -4(-5n + -2) = -18
(-1 + 5n) + -4(-5n + -2) = -18

Reorder the terms:
-1 + 5n + -4(-2 + -5n) = -18
-1 + 5n + (-2 * -4 + -5n * -4) = -18
-1 + 5n + (8 + 20n) = -18

Reorder the terms:
-1 + 8 + 5n + 20n = -18

Combine like terms: -1 + 8 = 7
7 + 5n + 20n = -18

Combine like terms: 5n + 20n = 25n
7 + 25n = -18

Solving
7 + 25n = -18

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 + 25n = -18 + -7

Combine like terms: 7 + -7 = 0
0 + 25n = -18 + -7
25n = -18 + -7

Combine like terms: -18 + -7 = -25
25n = -25

Divide each side by '25'.
n = -1

Simplifying
n = -1

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