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ajutatima va rog . macar prima

Ajutatima Va Rog Macar Prima class=

Răspuns :

a)   2/3x+1/2x-3/4=2-1/3x+9/4x
aducem la acelasi numitor
8x+6x-9=24-4x+27x
14x-23x=24+9
-9x=33
x=-33/9
b)    1-3/2a+17/5a=4/3a-37/15a+5/2
30-10a+102a=40a-74a+75
92a+34a=75-30
126a=45
a=45/126
a=15/42