bjr
a = 28 x (52 - 62) = 28 x (-10) = - 280
b = -2,51 x (73 + 27) = - 2,51 x 100 = -251
c = 5 x (-43 + 63) = 5 x 20 - tu trouves
Bonjour,
a)
28 * (52-62)
28 -10 = -280
b)
27=73 = 100
-2,51 * 100 = -251
c)
-5( 43 -63 )
43 -63 = 20
-5 * 20 = -100
