briannalane120
briannalane120
26-05-2017
Mathematics
contestada
NEED AN EXPERT PLZ ASAP
Respuesta :
Аноним
Аноним
26-05-2017
System of equations:
x + y = 23
x - y = 7
Add them together
2x = 30
x = 15
Now plug 15 into one of the equations:
15 + y = 23
y = 8
your two numbers are 15 and 8
Answer Link
apologiabiology
apologiabiology
26-05-2017
x+y=23 and
x-y=7
add
2x=30
divide 2
x=15
sub back
15-y=7
minus 15
-y=-8
y=8
da numbers are 8 and 15
Answer Link
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