100-7[3x-3(4-3)]=x

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Solution for 100-7[3x-3(4-3)]=x equation:


Simplifying
100 + -7[3x + -3(4 + -3)] = x

Combine like terms: 4 + -3 = 1
100 + -7[3x + -3(1)] = x

Multiply -3 * 1
100 + -7[3x + -3] = x

Reorder the terms:
100 + -7[-3 + 3x] = x
100 + [-3 * -7 + 3x * -7] = x
100 + [21 + -21x] = x

Combine like terms: 100 + 21 = 121
121 + -21x = x

Solving
121 + -21x = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
121 + -21x + -1x = x + -1x

Combine like terms: -21x + -1x = -22x
121 + -22x = x + -1x

Combine like terms: x + -1x = 0
121 + -22x = 0

Add '-121' to each side of the equation.
121 + -121 + -22x = 0 + -121

Combine like terms: 121 + -121 = 0
0 + -22x = 0 + -121
-22x = 0 + -121

Combine like terms: 0 + -121 = -121
-22x = -121

Divide each side by '-22'.
x = 5.5

Simplifying
x = 5.5

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