Question

71+503,5*2=x+140+1007

Answer 1

phep tinh nay sai ban oi

Answer 2

- 69 bạn nhé. âm 69 mk tính ra như thế.

Answer 3

\(71+503,5\times2=x+140+1007\)

\(71+1007=x+140+1007\)

\(1078=x+140+1007\)

\(1078-1007=x+140\)

\(71=x+140\)

\(71-140=x\)

\(-69=x\)

\(\Rightarrow x=-69\)