Question

Упростите
X-(y-x)
X-(y+x)
Y-x(y-x)
Y-x(z-y)
C-(b-c)
Z-y(x+z)
B-(b-a)
A-(c-a)

Answer 1

х-y+x=2x-y
x-y-x=-y
y-xy+x^2
y-xz+xy
c-b+c=2c-b
z-yx-yz
b-b+a=a
a-c+a=2a-c