Sagot :
21+8x2-{2+(13-9)x3}-(10-6)
F = 21+16-{2+(4x3)}-(4)
F= 21+16-(2+12)-4
F = 21+16-14-4
F= 19
F = 21+16-{2+(4x3)}-(4)
F= 21+16-(2+12)-4
F = 21+16-14-4
F= 19
F=21+8x2-[2+(13-9)x3]-(10-6)
= 21 + 16 - [ 2 + 4 x 3 ] - 4
= 37 - [ 2 + 12 ] - 4
= 37 - 14 - 4
= 23 - 4
= 19
= 21 + 16 - [ 2 + 4 x 3 ] - 4
= 37 - [ 2 + 12 ] - 4
= 37 - 14 - 4
= 23 - 4
= 19
