Question

hei! Cine ma poate ajuta?
Dau coroana si 3 followuri!!

Answer 1

h)5•x-21:7=4+13 5x-3=17 5x=17+3 5x=20 x=20:5 x=4 i)13-14:x=18-7 13-14:x=11 13-11=14:x 14:x=2 x=14:2 x=7

Answer 2

h )

5 · x - 21 : 7 = 4 + 13

5 · x - 3 = 17

5 · x = 17 + 3

5 · x = 20

x = 20 : 5

x = 4

Verific:   5 · 4 - 21 : 7 = 20 - 3 = 17

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i )

13 - 14 : x = 18 - 7

13 - 14 : x = 11

14 : x = 13 - 11

14 : x = 2

x = 14 : 2

x = 7

Verific:   13 - 14 : 7 = 13 - 2 = 11