98)a): -2x[-3-(-2)] = (-2x-3)+(-2x+2 car - et - fait+) 6-4 = 2 , b)25:(-0.5-2) = 25: -2.5 : désolé pas de calculatrice à toi de le faire, c)(-50)x(-0.0158)x25x(-4)x2 = 0.79x25x(-4)x2 = 19.75x(-4)x2 = -79x2 = -158, d) -[3.5-(-2)]:(-7-4) = -3.5+2 car - et - font+ : (-7-4) = 5.5 : - 11 = -0.5
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98)a): -2x[-3-(-2)] = (-2x-3)+(-2x+2 car - et - fait+) 6-4 = 2 , b)25:(-0.5-2) = 25: -2.5 : désolé pas de calculatrice à toi de le faire, c)(-50)x(-0.0158)x25x(-4)x2 = 0.79x25x(-4)x2 = 19.75x(-4)x2 = -79x2 = -158, d) -[3.5-(-2)]:(-7-4) = -3.5+2 car - et - font+ : (-7-4) = 5.5 : - 11 = -0.5