48=15+6[4+x]-3x

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Solution for 48=15+6[4+x]-3x equation: 


Simplifying
48 = 15 + 6[4 + x] + -3x
48 = 15 + [4 * 6 + x * 6] + -3x
48 = 15 + [24 + 6x] + -3x

Combine like terms: 15 + 24 = 39
48 = 39 + 6x + -3x

Combine like terms: 6x + -3x = 3x
48 = 39 + 3x

Solving
48 = 39 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
48 + -3x = 39 + 3x + -3x

Combine like terms: 3x + -3x = 0
48 + -3x = 39 + 0
48 + -3x = 39

Add '-48' to each side of the equation.
48 + -48 + -3x = 39 + -48

Combine like terms: 48 + -48 = 0
0 + -3x = 39 + -48
-3x = 39 + -48

Combine like terms: 39 + -48 = -9
-3x = -9

Divide each side by '-3'.
x = 3

Simplifying
x = 3

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