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whadduptori
 3 years ago
can someone show me work?
Can someone please help? Solve the system by substitution.
4.5x2y=12.5
3.25xy=0.75
whadduptori
 3 years ago
can someone show me work? Can someone please help? Solve the system by substitution. 4.5x2y=12.5 3.25xy=0.75

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ivie30
 3 years ago
Best ResponseYou've already chosen the best response.1Multiply the second equation by 2: (3.25xy=0.75) x 2 =6.5x 2y=1.5 Now subtract this new equation from the first one to eliminate y, i.e: 4.5x2y=12.5 (6.5x 2y=1.5) =>11x+0=11 x=11/11=1 put x back into the first eqn: 4.5(1)2y=12.5 4.52y=12.5 2y=12.5+4.5 y=8.5 so, x=1, y=8.5.

whadduptori
 3 years ago
Best ResponseYou've already chosen the best response.0thank you so much!! I relly appreciate it!! (:

whadduptori
 3 years ago
Best ResponseYou've already chosen the best response.0wait when you subtract the 2 from the two wouldnt you get 4?

whadduptori
 3 years ago
Best ResponseYou've already chosen the best response.0the 2y  2y isnt that 4?

ivie30
 3 years ago
Best ResponseYou've already chosen the best response.1No, it's 2y(2y)=2y+2y=0

whadduptori
 3 years ago
Best ResponseYou've already chosen the best response.0ohhhh i see what you mean! Im sorry i got confused for a second! thank you again!
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