Question

Rezolvați ecuatiile: a) 3(4+2×X)=42

b) (23-x):=3

c) 5×(3×X-9)=60

d)(23-5×X):9=2

e)24:(5-X)=6

f)32:(13-5×X)=4

g) 3×X-15:3=19+3

h)5×X-21:7=4+13

i)13-14:X=18-7


Va rog repede!!!
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Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

Explicație pas cu pas:

3(4+2×X)=42

(4+2×X)=42:3

4+2×X=14

2×X=14-4

2×X=10

X=10:2

X=5

5×(3×X-9)=60

(3×x-9)=60:5

3×x-9=12

3×x=12+9

3×x=21

x=21:3

x=7

(23-5×X):9=2

(23-5×x)=2×9

23-5×x=18

5×x=23-18

5×x=5

x=5:5

x=1

24:(5-X)=6

5-x=24:6

5-x=4

x=5-4

x=1

32:(13-5×X)=4

(13-5×x)=32:4

13-5×x=8

5×x=13-8

5×x=5

x=5:5

x=1

3×X-15:3=19+3

3×x-5=22

3×x=22+5

3×x=27

x=27:3

x=9

5×X-21:7=4+13

5×x-3=17

5×x=17+3

5×x=20

x=20:5

x=4

13-14:X=18-7

13-14:x=11

14:x=13-11

14:x=2

x=14:2

x=7