Question

If, 5x + 3y = 12 and 3y - 5x = -18, find x​

Answer 1

Answer:

5x + 3y = 12

-5x + 3y = -18

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6y = -6

y = -1

5x + 3y =12

5x + 3(-1) = 12

5x = 12+3

x = 15/5=3

x = 3

y= -1

Answer 2

$5x + 3y = 12 \\ 3y - 5x = - 18 \\ \\ 5x + -3y = 12 \\ 3y = - 18 + 5x \\ 5x - 18 + 5x = 12 \\ \times = 3 \\ \\ 3 x = - 18 + 5 \times 3 \\ y = - 1 \\ \\ therefore \: the \: answer \: is \\ x = 3 \\ y = - 1$

the answer is (x=3,y=-1)