Question

Đơn giản biểu thức:

\(a>\left(a+h\right)-\left(-c+a+b\right)\)

\(b>-\left(x+y\right)+\left(-z+x+y\right)\)

Answer 1

a) \(\left(a+h\right)-\left(-c+a+b\right)=a+h+c-a-b\)

\(=\left(a-a\right)+\left(h-h\right)+c=0+0+c=c\)

Answer 2

b) \(-\left(x+y\right)+\left(-z+x+y\right)=-x-y-z+x+y\)

= \(\left(-x+x\right)+\left(-y+y\right)-z=0+0-z=-z\)

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