stacy62202
stacy62202
12-05-2016
Mathematics
contestada
3x + 7y =47
-4x +7y =19
Respuesta :
JonathanHagen
JonathanHagen
24-11-2016
3x+7y=47
-1(-4x+7y=19)
Distribute the -1 and add the equations together...you'll get:
7x=28
x=4
Plug X=4 back in...
12+7y=47
7y=35
y=5
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