Question

1. Tìm x

486:x-126:x=6

725:x+175:x=5

Answer 1

a,486:x-126:x=6

=>(486-126):x=6

=>360:x=6

=>x=360:6

=>x=60

b,725:x+175:x=5

=>(725+175):x=5

=>900:x=5

=>x=900:5

=>x=180

Answer 2

486:x-126:x=6

(486-126):x=6

360:x=6

x=360:6

x=60

725:x+175:x=5

(725+175):x=5

900:x=5

x=900:5

x=180

Answer 3

426 : x - 126 : x = 6

( 486 - 126 ) : x = 6

360 : x = 6

x = 360 : 6

x = 60

725 : x + 175 : x = 5

( 725 + 175 ) : x = 5

900 : x = 5

x = 900 : 5

x = 180