8[7-(-4x-7)]=128+280

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Solution for 8[7-(-4x-7)]=128+280 equation:


Simplifying
8[7 + -1(-4x + -7)] = 128 + 280

Reorder the terms:
8[7 + -1(-7 + -4x)] = 128 + 280
8[7 + (-7 * -1 + -4x * -1)] = 128 + 280
8[7 + (7 + 4x)] = 128 + 280

Combine like terms: 7 + 7 = 14
8[14 + 4x] = 128 + 280
[14 * 8 + 4x * 8] = 128 + 280
[112 + 32x] = 128 + 280

Combine like terms: 128 + 280 = 408
112 + 32x = 408

Solving
112 + 32x = 408

Solving for variable 'x'.

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

Add '-112' to each side of the equation.
112 + -112 + 32x = 408 + -112

Combine like terms: 112 + -112 = 0
0 + 32x = 408 + -112
32x = 408 + -112

Combine like terms: 408 + -112 = 296
32x = 296

Divide each side by '32'.
x = 9.25

Simplifying
x = 9.25

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