Question

1/2•X+5/6=19/3
(2/3+1/5)•X=7/9
(1/5•x-7/9):3/5+1/3=9/2

Answer 1

Răspuns:

1/2 x X + 5/6=19/3 amplificam prima fractie cu 3

3x/6 + 5/6=19/3

3x+5 / 6 =19/3

Produsul mezilor = produsul extremilor

9x+15=6 x 19

9x+15=114

9x=99

X=99/9

X=11

(2/3+1/5)x X=7/9 amplificam prima fractie cu 5 si a doua cu 3

10/15+3/15 x X=7/9

10+3x / 15=7/9

Produsul mezilor=produsul extremilor

90+27x=105

27x=15

X=27/15

X=9/5

(1/5 x X- 7/9): 3/5+1/3=9/2

(x/5-7/9) x 5/3+1/3=9/2

Aplific pe prima cu 9 si pe a doua cu 5

9x-35/45 x 6/3=9/2

9x-35/45 x 2=9/2

18x-70/45=9/2 produsul mezilor=produsul extremilor

36x-140=405

545=36x

X=545/36