Question

Afla numarul x,asfel ca:a)72÷x=8;b)x÷13=14;c)144÷12=;d)x÷75=30;e)(8+4)×x=24;f)342+584×x=926;g)89-25×x=39;h)585-39×x=0.​

Answer 1

Răspuns:

9,182,2 250,2,1,2,15.

Explicație pas cu pas:

a)

72:x=8

x=72:8

x=9

v:72:9=8✔

b)

x:13=14

x=14×13

x=182

v:182:13=14✔

c)

144:12=?

d)

x:75=30

x=30×75

x=2 250

v:2 250:75=30✔

e)

(8+4)×X=24

12×X=24

X=24:12

X=2

v:(8+4)×2=12×2=24✔

f)

342+584×X=926

584×X=926-342

584×X=584

X=584:584

X=1

v:342+584×1=342+584=926✔

g)

89-25×X=39

25×X=89-39

25×X=50

X=50:25

X=2

v:89-25×2=89-50=39✔

f)

585-39×X=0

39×X=585-0

39×X=585

X=585:39

X=15

v:585-39×15=585-585=0✔