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Damagingawsomeness2
30.08.2019 •
Mathematics
Plz with whatever you can
i’m giving 40 points.
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Answers on questions: Mathematics
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Ответ:
23 x-29y=98(1)
29 x-23y=110(2)
adding (1) and (2)we get
52 x-52y=208
52(x+y)=208
x-y=4...(3)[we get four by dividing 208 with 52]
subtract (2) from (1) we get
-6 x-6y=-12
x-y=2(4)
adding (3) and (4) we get
2x=6
therefore x=3
now from (4) we get
x-y=2 [we substitute xfor 3]
3-y=2
y=2-3
y=-1( that is the answer for your first question)
Step-by-step explanation:
99x+101y=499(1)
101x+99y=501(2)
add (1) and (2)
(99+101)x+(101+99)=(499+501)
200x+200y=1000
200(x+ y)=1000
x+y=5(3)
subtract (2)from(1) we get
2x-2y=2
2(x-y)=2
x+y=1(4)
x+y=5
x-y=1(add them together)
2x=6
x=3
substitute x equal to 3 in equation (3)
x+y=5
3+y=5
y=2
y equal to 2 and x equal to 3
hope is not too late