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Maximelian
a fost răspuns

Rezolvati in Q ecuatiile; 0,5-2x=1/4 : 2-3/4·x=1/2·x+1

Răspuns :

0,5-2x=1/4 | · 4
2-8x=1
8x=1
x= 1/8 = 0,125

2- 3/4·x=1/2·x+1
1/2·x+3/4·x=1 
(2·x+3·x)/4=1
5x=4
x=4/5= 0,8 
0,5-2x=1/4
0,5-2x=0,25
2x=0,5-0,25=0,25
x=0,25:2=0,125

2-3/4·x=1/2·x+1
2-0,75x=0,5x+1
-0,75x-0,5x=-2+1
-1,25x=-1
X=(-1):(-1,25)
X=1:1,25
X=0,8

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