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a fost răspuns

Rezolvati ecuatiile: 20X-5=35;30X+15=375;12X125=139;453+6X=531

Răspuns :

Michellamba
E foarte simplu-20X=35+5,20X=40,x=40/20,x=2
30X=375-15,X=360/30,X=12,6X=531-453,6X=48,X=8
Roby69
2.30x=375-15
30x=360
X=360:30
X=12
4.6x=-453+531
6x=78
X=78:6
X=13
Si la a treia nu inteleg

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