Question

Tìm x 

x+54=54-x

x-43=43-x

Answer 1

\(x+54=54-x\)

\(\Leftrightarrow x+x=54-54\)

\(\Leftrightarrow2x=0\)

\(\Leftrightarrow x=0\)

Answer 2

\(x+x=54-54\)\(\Leftrightarrow2x=0\Leftrightarrow x=0\)
\(x-x=43+43\Leftrightarrow0x=86\Leftrightarrow x=0\)

Answer 3

x +54=54-x

x=0

x-43=43-x

x=0

đúng thì cho

Answer 4

x-43=43-x

x+x=43+43

2x=46

x=43

Answer 5

x =0

x =0

k mình nha

Answer 6

\(x-43=43-x\)

\(\Leftrightarrow x+x=43+43\)

\(\Leftrightarrow2\times x=43\times2\)

\(\Rightarrow x=43\)

Answer 7

con...............................................................................me!

Answer 8

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