Question

Repede, am nevoie repede!

Answer 1

Răspuns:

Ex 2 si 3 de la subiectul al II -lea sunt in foto.

Succes!

Explicație pas cu pas:

1) 2049+354=2403

2049-354=1.695

2) 2018×35+66×2018-2018=

70.630+133.188-2018=

203.818-2018=201.800

3) 2170÷37=58 r 24

4) 5^10×5^15: (5^2)^5=

5^25:5^10=5^15

5) 7^0+1^5+3^3+0^10= nota: " ^ " inseamna ridicat

1+1+27+0=29 la putere

6) 4^5=1024

8^3=512

deci 4^5>8^3

7) 6kg mere= 24 lei

15 kg mere=?

24lei : 6 kg = 4 lei/ 1kg mere

15kg × 4lei = 60 lei

8) D18={1; 2; 3; 6; 9}

9) 670; 675

Subiectul II

(8+3x)×14-30=1762

(8+3x)×14=1762+30

(8+3x)×14=1792

112+42x=1792

42x=1792-112

42x=1680

x=1680:42

x=40