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Rezolvati urmatoarele ecuatii ! Aflatilpe

a) 4,21×5+x=40,85
b) 2x = 14
c) 3x=15,45
d) 10x=25,32


Răspuns :

a) 21.05+x=40.85
x=40,85-21,05
x=19,8 *nu sunt 100% sigura ca e bine*

b)2x=14
x=14:2=> x=7

c)3x=15,45
x=15,45:3=> x=5.15

d) 10x=25,32
x=25,32:10=> x=2,532
a).4,21x5+x=40,85

x=40,85-4,21

x=36,64

b).2x=24

x=24:2
x=12

c).3x=15,45
x=15,45:3
x=5,15

d).10x=25,32
x=2,532