EmiJ0925
EmiJ0925
20-02-2019
Mathematics
contestada
Solve using elimination.
Respuesta :
sherry318
sherry318
20-02-2019
-3x-5y=-7
4x+5y=14
You can cross out -5y and 5y because they add to 0.
-3x=-7
4x=14
Combine:
x=7
Plug 7 into x into either of the two equations to solve for y.
4(7)+5y=14
28+5y=14
5y=-14
y=-14/5 or -2.8
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