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5 va rog!!! Coroana!!!!!

5 Va Rog Coroana class=

Răspuns :

2/3(1+(3-7x)/2)=x
aducem fractiile la acelasi numitor:6⇒
2/3+2·(3-7x)/2·3=x⇔4+6-14x=6x
14x+6x=10⇒20x=10⇒x=1/2
2/3*(1*2+3-7x/2)=x
2/3*(2+3-7x/2)=x
2/3*5-7x/2=x10-14x/6=x  simplificam 10 si 6 cu 2 si  amplificam x cu 3
5-14x=3x
-14x-3x=-5    amplificam cu -1
17x=5
x=5/17