7[7-(-3x-5)]=84x+189

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Solution for 7[7-(-3x-5)]=84x+189 equation:


Simplifying
7[7 + -1(-3x + -5)] = 84x + 189

Reorder the terms:
7[7 + -1(-5 + -3x)] = 84x + 189
7[7 + (-5 * -1 + -3x * -1)] = 84x + 189
7[7 + (5 + 3x)] = 84x + 189

Combine like terms: 7 + 5 = 12
7[12 + 3x] = 84x + 189
[12 * 7 + 3x * 7] = 84x + 189
[84 + 21x] = 84x + 189

Reorder the terms:
84 + 21x = 189 + 84x

Solving
84 + 21x = 189 + 84x

Solving for variable 'x'.

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

Add '-84x' to each side of the equation.
84 + 21x + -84x = 189 + 84x + -84x

Combine like terms: 21x + -84x = -63x
84 + -63x = 189 + 84x + -84x

Combine like terms: 84x + -84x = 0
84 + -63x = 189 + 0
84 + -63x = 189

Add '-84' to each side of the equation.
84 + -84 + -63x = 189 + -84

Combine like terms: 84 + -84 = 0
0 + -63x = 189 + -84
-63x = 189 + -84

Combine like terms: 189 + -84 = 105
-63x = 105

Divide each side by '-63'.
x = -1.666666667

Simplifying
x = -1.666666667

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