18=4(2+x)-15

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Solution for 18=4(2+x)-15 equation:


Simplifying
18 = 4(2 + x) + -15
18 = (2 * 4 + x * 4) + -15
18 = (8 + 4x) + -15

Reorder the terms:
18 = 8 + -15 + 4x

Combine like terms: 8 + -15 = -7
18 = -7 + 4x

Solving
18 = -7 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
18 + -4x = -7 + 4x + -4x

Combine like terms: 4x + -4x = 0
18 + -4x = -7 + 0
18 + -4x = -7

Add '-18' to each side of the equation.
18 + -18 + -4x = -7 + -18

Combine like terms: 18 + -18 = 0
0 + -4x = -7 + -18
-4x = -7 + -18

Combine like terms: -7 + -18 = -25
-4x = -25

Divide each side by '-4'.
x = 6.25

Simplifying
x = 6.25

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