Răspunsuri

2014-03-29T11:22:23+02:00
2a-20=b:30=c+13=d:75=5
d:75=5
d=375
c+13=375
c=362
b:30=362
b=10860
2a-20=10860
2a=10880
a=5440
8 3 8
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  • Utilizator Brainly
2014-03-29T12:33:45+02:00
Se pune enuntul in ecuatie astfel:
75:[(2x-20):30+13]=5 ⇒ (2x-20):30+13=15 ⇒ (2x-20):30=2 ⇒ 2x-20=60 ⇒ x=40
14 4 14