5+x-3(x+4)=-18

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Solution for 5+x-3(x+4)=-18 equation:


Simplifying
5 + x + -3(x + 4) = -18

Reorder the terms:
5 + x + -3(4 + x) = -18
5 + x + (4 * -3 + x * -3) = -18
5 + x + (-12 + -3x) = -18

Reorder the terms:
5 + -12 + x + -3x = -18

Combine like terms: 5 + -12 = -7
-7 + x + -3x = -18

Combine like terms: x + -3x = -2x
-7 + -2x = -18

Solving
-7 + -2x = -18

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + -2x = -18 + 7

Combine like terms: -7 + 7 = 0
0 + -2x = -18 + 7
-2x = -18 + 7

Combine like terms: -18 + 7 = -11
-2x = -11

Divide each side by '-2'.
x = 5.5

Simplifying
x = 5.5

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