if 2x+y=23 and 4x-y=19, find the value of 5x-2x and y/x-2
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Step-by-step explanation:
2x + Y = 23
4 x-y = 19 --------------(1)
________
6 x = 42
______
x =7
put the value of x in equation (1)
4 x - y =19
28-19 = y
y = 95
(1)
5x-2x
put the value of x
=21
(2)
Y/x-2
put the value of x and y
-54/7
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