7[3-(-3x-8)]=42x+133

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Solution for 7[3-(-3x-8)]=42x+133 equation:


Simplifying
7[3 + -1(-3x + -8)] = 42x + 133

Reorder the terms:
7[3 + -1(-8 + -3x)] = 42x + 133
7[3 + (-8 * -1 + -3x * -1)] = 42x + 133
7[3 + (8 + 3x)] = 42x + 133

Combine like terms: 3 + 8 = 11
7[11 + 3x] = 42x + 133
[11 * 7 + 3x * 7] = 42x + 133
[77 + 21x] = 42x + 133

Reorder the terms:
77 + 21x = 133 + 42x

Solving
77 + 21x = 133 + 42x

Solving for variable 'x'.

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

Add '-42x' to each side of the equation.
77 + 21x + -42x = 133 + 42x + -42x

Combine like terms: 21x + -42x = -21x
77 + -21x = 133 + 42x + -42x

Combine like terms: 42x + -42x = 0
77 + -21x = 133 + 0
77 + -21x = 133

Add '-77' to each side of the equation.
77 + -77 + -21x = 133 + -77

Combine like terms: 77 + -77 = 0
0 + -21x = 133 + -77
-21x = 133 + -77

Combine like terms: 133 + -77 = 56
-21x = 56

Divide each side by '-21'.
x = -2.666666667

Simplifying
x = -2.666666667

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