Question

Derterminati numărul necunoscut din proporțiile :
b) y - 4/5=7/3
c) 4/5=3z -2 /9
d) 4t + 5/3= 7/2
e) 5x + 1/2 = 7/3
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Answer 1

Explicație pas cu pas:

b) y=7/3+4/5=35/15+12/15=47/15

y=47/15

c) 3z=4/5+2/9=36/45+10/45=46/45

z=46/45:3=46/45•1/3=46/135

z=46/135

d)4t=7/2-5/3=21/6-10/6=11/6

t=11/6:4=11/6•1/4=11/24

t=11/24

e)5x=7/3-1/2=14/6-3/6=11/6

×=11/6:5=11/6•1/5=11/30

×=11/30