(0.64+0.9)(65.7-69.2)=-5,39
10x + (8x − (6x + 4)) = 10x + (8x − 6x − 4) = 10x + 8x − 6x − 4 = 12x − 4
(0.64+0.9)(65.7-69.2)=-5,39
10x + (8x − (6x + 4)) = 10x + (8x − 6x − 4) = 10x + 8x − 6x − 4 = 12x − 4