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2x - [11 (x - 4) + 3] = 77
2x - [11x - 44 + 3 ] = 77
2x - ( 11x - 41) = 77
2x - 11x + 41 = 77
- 9x = 77 - 41
- 9x = 36
x = 36 / - 9
x = - 4
To prove whether the result is true or not, substitute x with - 4 :
2x - [11 (x-4) + 3] = 77
2(-4) - [11 (- 4 - 4) +3 ] = 77
- 8 - [ 11 (- 8) + 3 ] = 77
- 8 - ( - 88 + 3 ) = 77
- 8 - ( - 85 ) = 77
- 8 + 85 = 77
77 = 77
2x - [11x - 44 + 3 ] = 77
2x - ( 11x - 41) = 77
2x - 11x + 41 = 77
- 9x = 77 - 41
- 9x = 36
x = 36 / - 9
x = - 4
To prove whether the result is true or not, substitute x with - 4 :
2x - [11 (x-4) + 3] = 77
2(-4) - [11 (- 4 - 4) +3 ] = 77
- 8 - [ 11 (- 8) + 3 ] = 77
- 8 - ( - 88 + 3 ) = 77
- 8 - ( - 85 ) = 77
- 8 + 85 = 77
77 = 77
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