Question

Ex 6 si 7 doar punctul c la amandoua dau coroana urgent!

Answer 1

ai rezolvarea în poza

Answer 2

Răspuns:

6. c) 3+10×{3+10×[3+10×(3+10×3)-3]-3}-3 =

= 3+10×{3+10×[3+10×(3+30)-3]-3}-3

= 3+10×[3+10×(3+10×33-3)-3]-3

= 3+10×[3+10×(3+330-3)-3]-3

= 3+10×(3+10×330-3)-3

= 3+10×( 3+3300-3)-3

= 3+10 × 3300 -3

= 3+ 33000-3

= 33000

7. c) 10×{2+10×[126+10×(24+24÷2-6)]}-42600

=10×{2+10×[126+10×(24+12-6)]}-42600

= 10×{2+10×[126+10×(36-6)]}-42600

= 10×[2+10×(126+10×30)]-42600

= 10×[2+10×(126+300)] -42600

= 10×(2+10×426)-42600

= 10×( 2+4260)-42600

= 10× 4262- 42600

= 42620-42600

= 20