Tìm x biết x- 1/2=7/13.13/28
Giải thích
a)x−12=713.1328;x−12=14b)x15=−311.7736;x15=−712;x=15.−712c)x+77=918.927;x+1=16d)x:1511=−312.8;x:1511=−2;x=(−2).1511
a)x−12=713.1328;x−12=14b)x15=−311.7736;x15=−712;x=15.−712c)x+77=918.927;x+1=16d)x:1511=−312.8;x:1511=−2;x=(−2).1511