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a) x/4+7/8=x-3/6
b) x/2+3/7=x+3/4
c) 4x+2/5=x/2+3/4

/ inseamna supra adica pe
Urgent dau 40puncte +coroana


Răspuns :

a)2x/8+7/8=6x/6-3/6
2x+7/8=6x-3/6
6 (2x+7)=8 (6x-3)
12x+42=48x-24
12x-48x=-24-42
-36x=-66
×=66/36
x=11/6
la urmatoarele ia- te dupa model