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rezolvati ecuatiile va rog mult:
sunt in imagine.


Rezolvati Ecuatiile Va Rog Mult Sunt In Imagine class=

Răspuns :

a)7x=42•15/9=14•5=>x=70/7=10
x=10
b)x= 44•31/41•4=>
x= 11•31/41=>
x= 341/41
c)x= 2,5•37/0,74•9=>
x= 2,5•50/9=>
x=125/9
a)
4x=[tex] \frac{15*42}{9} [/tex]=[tex] \frac{630}{9} [/tex]
4x=70 | :4
x=17,5

b)[tex] \frac{4x}{31} = \frac{44}{41} [/tex]
4x=[tex] \frac{31*44}{41} [/tex]=[tex] \frac{1364}{41} [/tex]
4x=33,2 |:4
x=8,31

c)[tex] \frac{9x}{37} = \frac{2,5}{0,74} [/tex]
9x=[tex] \frac{37*2,5}{0,74} = \frac{92,5}{0,74} [/tex]
9x=125 |:9
x=13,8