Question

Rezolvati ecuatiile

(3x+1) : 5 = 5

2,5x - 3(1,5 + 2) = 4,8

$2x + \frac{1}{2} = 0.75 + \frac{1}{3} x$
$\frac{3(x - 5)}{2} = 5x - 18$

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Answer 1

Răspuns:

(3x+1)=5×5=25

3x=25-1=24

x=24:3=8

2,5x-3×3,5=4,8

2,5x-10,5=4,8

2,5x=4,8+10,5=15,3

x=15,3:2,5=6,1