Question

1)For the given equation below find value of sy 2x
If 2x + y = 23 and 4x - y = 19,​

Answer 1

Answer:

ANSWER

4x - y = 19

x - y = 19 - 19 / 4

x - y = 3

x = y + 3

so x can be written as y + 3

So, y + 3 + y = 23

2y + 3 = 23

2y = 23 - 3

2y = 20

y = 20/ 2

y = 10

Therefore,

y = 10

x = 10 + 3 = 13

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