Question

va rog dau coroana si 60 de puncte

Answer 1

(x+3)/7-5/2=x/2-5
3/7+5-2si1/2=x/2-x/7
3/7+5/2=(7x-2x)/14

(6+35)/14=5x/14
41=5x
x=41/5

care verifica
41/35+3/7=41/10-5/2
....
56/35=16/10=8/5




sau
2x+6-5*7=7x-5*14
5*14+6-5*7=7x-2x
70+6-35=5x
35+6=5x
5x=41
x=41/5

Answer 2

$\frac{x+3}{7} -2 \frac{1}{2} = \frac{x}{2} -5 \\ \\ \frac{x+3}{7} - \frac{5}{2} = \frac{x}{2} -5 \\ \\ \frac{x+3}{7} - \frac{x}{2} =-5+ \frac{5}{2 }se.aduce.la.acelasi.numitor \\ \\ 2x+6-7x=-70+35 \\ \\ -5x=-70+35-6 \\ \\ -5x=-41 |-1 \\ \\ x= \frac{41}{5} \\ \\ x=8,2$Ι