Question

Tìm số nguyên x biết :

x - ( 1 - x ) = 5 + ( -1 + x )

Answer 1

\(x-\left(1-x\right)=5+\left(-1+x\right)\)

\(\Rightarrow x-1+x=5-1+x\)

\(\Rightarrow x+x-x=5-1+1\)

\(\Rightarrow x=5\) (thỏa mãn x là số nguyên)

Vậy  x = 5

Answer 2

x-(1-x)=5+(-1+x)

=>x-1+x=5-1+x

=>2x-1=4+x

=>2x-x=4+1

=>x=5

Answer 3

Trả lời  :.................................................

\(\Rightarrow x=5\)

Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

k nhé

Answer 4

\(x-\left(1-x\right)=5+\left(-1+x\right)\)

\(\Rightarrow x-1+x=5-1+x\)

\(\Rightarrow x-1=5-1\)

\(\Rightarrow x=5-1+1\)

\(\Rightarrow x=5\)