Question

tìm x\(\in\) Z biết:

(-x+42)-38=-68+12

Answer 1

\(\left(-x+42\right)-38=-68+12\)

\(\left(-x+42\right)-38=-56\)

\(\left(-x+42\right)=-18\)

\(-x=-60\)

\(\Leftrightarrow x=60\)

Answer 2

( -x + 42 ) - 38 = -68 + 12

=> -x + 42 = -56 + 38

=> -x + 42 = 18

=> -x = -24

=> x = 24

Vậy x = 24

Answer 3

Nguyễn Huy Tú sai r kìa