Question

4. Aflaţi termenul necunoscut al proporției:
b) x/27 = 2/3 c) 2/5=5/x d)9/0,8=x/1,6 e)x/4=3/10


DAU COROANA !!!!
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Answer 1

Răspuns:

b)x=243 c)x=12.5 d)x=18 e)x=1.2

folosesti inmultirea in X

b) x/27=2/3

x•3=2•27

x•3=729

x=729/3

x=243

c)2/5=5/x

x•2=5•5

x•2=25

x=25/2

x=12.5

d)9/0.8=x/1.6

x•0.8=9•1.6

x•0.8=14.4

x=14.4/0.8

x=18

e)x/4=3/10

x•10=3•4

x•10=12

x=12/10

x=1.2