Question

The solution of equations 2y - x = 0 and
10x + 15y = 105 is_________

(1) (31,62) . (2) (-31,-62)
(3) (-6,-3)
(4) (6,3)​

Answer 1

Answer:

2y - x = 0 •••••••••1

10x + 15y = 105 ••••••••••2

From 1, x = 2y•••••••••3

Substitute the value of x in equation 2

10(2y) + 15y = 105

20y + 15y = 105

35y = 105

y = 100/35

y = 20/7

Substitute the value of y in equation 3

x = 2(20/7)

x = 40/7

Hence, x = 40/7 and y = 20/7

HOPE IT HELPS

Answer 2

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