Question

determinati x€n astfel incat perechile urmatoare de fractii sa fie echivalente . repede ​

Answer 1

Răspuns:

3x × 2=30 ×7

6x=210

x=35

5x ×16=40 ×8

80x=320

x=4

15 ×4=2x

60=2x

x=30

5 ×40=2x²

200=2x²

100=x²

x=10

x²× 5=30 ×6

x²×5=180

x²=36

x=6

x-2×5=3x

-2×5=3x-x

-10=2x

x=-5

36×3=27×x²

108=27×x²

x²=4

x=2

5×147=15× (x+1)²

735=15× (x+1)²

49=(x+1)²

49=7² rezulta ca x+1=7 rezulta ca x=6