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d) (d:6+48:4+72:2:6:3)×10=2×100+25×2.
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Răspuns :

Răspuns:

(d:6+48:4+72:2:6:3)×10= 2×100+25×2

= (d:6+12+36:2) × 10 = 200+ 25

= (d:6+12+18)×10 = 225

= (d:6+30) ×10 = 225

= (d:6) ×10 = 225-30

= (d:6) ×10 = 195

= d×10 = 195×6

=d×10 = 1170

d= 1170 : 10

d= 117