7[5-(-2x-3)]=28+77

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Solution for 7[5-(-2x-3)]=28+77 equation:


Simplifying
7[5 + -1(-2x + -3)] = 28 + 77

Reorder the terms:
7[5 + -1(-3 + -2x)] = 28 + 77
7[5 + (-3 * -1 + -2x * -1)] = 28 + 77
7[5 + (3 + 2x)] = 28 + 77

Combine like terms: 5 + 3 = 8
7[8 + 2x] = 28 + 77
[8 * 7 + 2x * 7] = 28 + 77
[56 + 14x] = 28 + 77

Combine like terms: 28 + 77 = 105
56 + 14x = 105

Solving
56 + 14x = 105

Solving for variable 'x'.

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

Add '-56' to each side of the equation.
56 + -56 + 14x = 105 + -56

Combine like terms: 56 + -56 = 0
0 + 14x = 105 + -56
14x = 105 + -56

Combine like terms: 105 + -56 = 49
14x = 49

Divide each side by '14'.
x = 3.5

Simplifying
x = 3.5

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