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Matemática básica

sistema de numeração

1.e) 4

2.c) xy2 100.x+10.y+2

3.a) 2614

4.d) 3534m3 = 1000

3534000 = 3534859,35

800

50

9

0,35

5. abc=100a+10b+c trocando

cba= 100c+10b+a a diferença entre

abc - cba = 100a - 100c+10b-10b+ a-c

abc - cba = 100 (a-c) - a-c [ a-c=d> 0 ]

abc-cba=100d - d

pegar emprestado do 100

abc-cba=100(d-+1)-d

abc-cba=100(d-1) +100-d

abc- cba= 100 (d-1)+100-d

abc-cba=100(d-1)+90+10

abc-cba=100(d-1) +10.9+ (10-d)

X=100(10-d)+10.9+(d-1)

abc-cba+x=100(d-1+10

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