Question

Calcule a seguinte expressão 2(x – 1) = 5x + 3(x + 2). *

Answer 1

2 ( x – 1 ) = 5x + 3 ( x + 2 ) =

2x – 2 = 5x + 3 ( x + 2 ) =

2x – 2 = 5x + 3x + 6 =

2x – 2 = 8x + 6 =

2x – 2 – 8x = 6 =

2x – 8x = 6 + 2 =

– 6x = 6 + 2 =

– 6x = 8 =

x = – 4/3

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