Question

Aflați numărul natural necunoscut:
b)2x=x+3=x..
c)24:x=6=x
d)x+5=31=x=...
e)2x-3=17=x...
f)3(x+1)-2=16=x...
Dau corona va rog!!​

Answer 1

Răspuns:

b)

2x=x+3

2x-x= 3

x=3

v: 2×3 =3+3

c) 24÷x =6

X= 24÷6

x= 4

v: 24 ÷4=6

d)

x+4=31

x= 31-4

x= 27

v: 27+4=31

e) 2x-3= 17

2x=17 +3

2x=20

x=20÷2

x = 10

v: 2×10 -3 = 20-3=17

f)

3( x+1) -2=16

3x+3 = 16+2

3x+3 =18

3x= 18-3

3x=15

x=15÷3

x= 5

v: 3 ( 5 +1) -2=

3×6-2= 18-2=16