Question

afla numărul necunoscut . 45:X×100=900; 25×4:×=20;824-240:×=800;245+50×x=745;x:9×8=808;x×6:9=32

Answer 1

45:X×100=900
45:X=900:100
45:X=9
X=45:9
X=5
25×4:X=20
100:X=20
X=100:20
X=5
824-240:X=800
240:X=824-800
240:X=24
X=240:24
X=10
245+50×X=745
50×X=745-245
50×X=500
X=500:50
X=10
X:9×8=808
X:9=808:8
X:9=101
X=101×9
X=909
X×6:9=32
X×6=32×9
X×6=288
X=288:6
X=48