55 - (6 - x) = 15 - (-6)
=> 55 - 6 + x = 15 + 6
=> x = 15 + 6 + 6 - 55
=> x = -28
Đúng 0
Bình luận (0)
55 - (6 - x) = 15 - (-6)
=> 55 - 6 + x = 15 + 6
=> x = 15 + 6 + 6 - 55
=> x = -28
so phan tu cua tap hop cac so nguyen x thoa man:15-lx-2l bang 12
so nguyen x thoa man x-/-47\=-55-35 a
so nguyen x thoa man :x-(-25-17-x)=6+x
so nguyen x thoa man x-(-25-17-x)=6+x
so nguyen x thoa man x-(-25-17-2x)=6+x
so nguyen x thoa man : x - (-25 - 17 - 2x) = 6 + x la
tong tat ca cac so nguyen x thoa man:(x+6)(x-9)=0
so nguyen x thoa man x-(-25-17-2x)=6+x
tong cac so nguyen x thoa man -102< hoac bang x <100