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Stells [14]
3 years ago
12

Albert says these two systems are similar

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0
we solve the second system: (it is more easy).
8x+9y=48
-8.5y=-51    ⇒y=-51/-8.5=6

8x+9(6)=48
8x+54=48
8x+54-54=48-54
8x=-6
x=-6/8=-3/4

Then; in te second system the solution is : x=-3/4; y =6

Now, we replace "x" by "-3/4" and "y" by "6", in the first systmen.

8x+9y=48
8(-3/4)+9(6)=-6+54=48. verified

12x+5y=21
12(-3/4)+5(6)=-9+30=21    verified

Therefore,
These two wystems are similar. 
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Answer:

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