Question

Rezolvati in Q+ ecuatiile :
$a)~3 \frac{3}{5}x + 1 = 2x + \frac{9}{4} \\ b) \frac{4}{3}x + 1 = x + 5,3 \\ c) 1\frac{1}{9}x + 0,5 = x + 6,7$

Answer 1

a)
18x/5+1=2x+9/4
aducand la acelasi numitor⇒
72x+20=40x+45
32x=25
x=25/32
b)
4x/3+1=x+53/10
40x+30=30x+159
10x=129
x=129/10
c)
10x/9 +5/10=x+67/10
100x+45=90x+603
10x=603-45=558
x=558/10=279/5