if 2x + y= 23 and 4x_ y=19 then find the values of 5y_2x and y/x_2.
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Answer:
5y - 2x = 31
y/x - 2 = (-5)/7
Step-by-step explanation:
2x + y = 23 --------- (1)
4x - y = 19 -----------(2)
Adding (1) and (2)
6x = 42
x = 7
Substituting the value of x in (1)
14 + y = 23
y = 9
5y - 2x
= 5*9 - 2*7
= 45 - 14
= 31
y/x - 2
= 9/7 - 2
= (9-14)/7
= (-5)/7
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