Question

vaa rogggg e urgenttt dau 30 puncte și corona ​

Answer 1

Raspuns: a) 2/3 b) 9 c) 29/25 d) x=7

Rezolvari: Ai in poza

Answer 2

Răspuns:

Explicație pas cu pas:

rezolvare

a)

[11/6-(²⁾7/3+1/6):15/7=

[11/6-(14/6+1/6):15/7=

11/6-15/6:15/7=

11/6-15/6*7/15=

11/6-7/6=

4/6=2/3

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b)

7/2+11/2=18/2=9

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c)

1+(2/5)¹⁷:(2/5)¹⁵=

1+(2/5)¹⁷⁻¹⁵ =

1+(2/5)²=

²⁵⁾1+4/25=

(25+4)/25=

29/25

-

d)

3*(x+3)=2*15

3x+9=30

3x=30-9

3x=21

x=21:3

x=7