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a fost răspuns

Ajutati-ma va roog la rezolvarea ecuatiilor:
a) 5x-0,3x=4,5x+2
b) 11x-(-2x+1)+21

Răspuns :

SonikShot
a) 5x-0,3x=4,5x+2 <=> 5x=4,8x+2 <=> (scadem 4,8x)0,2x = 2 <=> x=10
b)11x-(-2x+1)=21 <=> 11x+2x-1=21<=> 13x=22 <=> x=22/13

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