Friends pls do the sum faster.
pair of linear equations in two variables.
(8a+20b=1)
(9a+18b=1)
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72a+180b=9
72a+144b=8
then, 36b=1
then, b = 1/36
then, 72a+5= 9
the, 72a = 4
then, a = 4/72
therefore, b = 1/36 and a = 1/18
72a+144b=8
then, 36b=1
then, b = 1/36
then, 72a+5= 9
the, 72a = 4
then, a = 4/72
therefore, b = 1/36 and a = 1/18
ashi97:
but I got the answer before
how old are you?
I am 16
oh i am only 12+
anyway welcome
anyway welcome
anyway welcome
oops
what happened
anyway thanks for the answer
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