Method.........

Question

Select all systems that are equivalent to this system:

{6d+4.5e=16.5

{5d+0.5e=4

A {6d+4.5e=16.5

{45d+4.5e=4

B{30d+22.5e=82.5

{5d+0.5e=4

C{30d+22.5e=82.5

{30d+ 3e=24

D{6d+4.5e=16.5

{6d+0.6e=4.8

E{12d+9e=33

{10d+0.5e=8

F {6d+4.5e=16.5

{10d+ e=8

Answer 1

Hi,

you need to check whether all terms in every equation times or divides by a number, if yes this new system is equivalent with given system.

B -----> is equivalent because all terms of first equation time by 5

C------> is equivalent because all terms of second equation time by 6

D------> is equivalent because all terms of second equation time by 1.2

F------> is equivalent because all terms of second equation time by 2

I hope it is useful,

Minoo