Question

Descubra mentalmente o valor de x, tal que: Se x + 4 = 7, então x = 3 porque 3 + 4 = 7 a) x + 2 = 10 b) x + 4 = 14 c) x – 4 = 2 d) x – 7 = 0 x = ______ x = ______ x = ______ x = ______ Se 2x = 12, então x = 6 porque 2 . 6 = 12 e) 5x = -10 f) 2x = 14 g) 3.x = 27 h) 4x = -8 x = ______ x = ______ x = ______ x = ______

Answer 1

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