Question

What's the answer of x - 2y= 18; x + 11y=5? Send help

Answer 1

Answer:

x=16 , y= -1 (solved by elimination method)

Answer 2

Answer:

$x - 2y = 18 \\ x = 18 + 2y \\ let \: y \: be \: 1 \\ x = 18 + 2 \times 1 \\ x = 18 + 2 \\ x = 20 \\ now \\ x + 11y = 5 \\ let \: y \: be \: x \: be \: 2 \\ x + 11 \times 2 = 5 \\ x + 22 = 5 \\ x = 5 - 22 \\ x = - 17$

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