Question

mik chỉ cần câu 6 thôi nha  các bn giup mik nha

Answer 1

\(6,24-\left(30+x\right)=x-\left(28-10\right)\\ \Leftrightarrow24-30-x=x-18\\ \Leftrightarrow-6-x=x-18\\ \Leftrightarrow x-18+x+6=0\\ \Leftrightarrow2x-12=0\\ \Leftrightarrow2x=12\\ \Leftrightarrow x=6\)

Answer 2

6: \(\Leftrightarrow-6-x=x-18\)

\(\Leftrightarrow-2x=-12\)

hay x=6

Answer 3

6, <=> 24-30-x =x -28+10

<=> -6-x = x -18

<=> x= 6