Question

Gaseste numerele x,y,z,t, daca sunt invers proportionale cu 2,3,4,5,15, iar 2x+3t=72

DAU CORONITA

Answer 1

Explicație pas cu pas:

/= linie de fracție

x/2=y/3=z/5=t/15=k

x=2k

y=3k

z=5k

t=15k

3•2k +3•15k=72

6k+45k=72

51k=72

k=72/51=24/15=8/5

k=8/5

x=2/1•8/5=16/5(3,2)

y=3/1•8/5=24/5

z=5/1•8/5=40/5=8/1=8

t=15/1•8/5=120/5=24/1=24

R:x=16/5 (sau daca vrei 3,2)

y=24/5(sau daca vrei 4,8)

z=8

t=24

Sper ca te-am ajutat!

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