Question

plz answer in step by step please​

Answer 1

Step-by-step explanation:

1.

$x + y = 5 \: \: \: \: (i )\\ \: x - y = 8 \: \: \: \: (ii)\\ \\ \: x + y = 5 \\ \: x - y = 8 \\ - - - - - - - - - \\ 2x = 13 \\ x = \frac{13}{2} \\ - - - - - - - - - - - - \\ \\ x + y = 5 \\ \frac{13}{2} + y = 5 \\ y = 5 - \frac{13}{2} \\ y = - \frac{3}{2} \\ \\ x = \frac{13}{2} \: \: \: and \: \: \: y = - \frac{3}{2}$

3.

$x + 3y = 11 \: \: \: \: (i) \times 4 \\ 2x - 4y = - 24 \: \: \: \: (ii) \times 3 \\ \\ 4x + 12y = 44 \\ 6x - 12y = - 72 \\ - - - - - - - - - - - - \\ 10x = - 116 \\ x = - \frac{116}{10} \\ x = - \frac{58}{5} \\ - - - - - - - - - - \\ \\ \\ - \frac {58}{5} + 3y = 11 \\ 3y = 11 + \frac{58}{5} \\ 3y = \frac{55 + 58}{5} \\ 3y = \frac{113}{5} \\ y = \frac{113}{15} \\ \\ x = - \frac{58}{5} \: \: \: and \: \: \: \: y = \frac{113}{15}$

2.

$2x + y - 6 = 0 \\ 2x + y = 6 \: \: (i) \times 2 \\ \\ 4x - 2y - 4 = 0 \\ 4x - 2y =4 \: \: \: (ii) \times 1 \\ \\ 4x + 2y = 12 \\ 4x - 2y = 4\\ - - - - - - - - - - \\ 8x = 16 \\ x = 2 \\ - - - - - - - - - - \\ 4 + y = 6 \\ y = 6 - 4 \\ y = 2 \\ \\ x = 2 \: \: and \: \: \: y = 2</p><p>$

Put the values of x into the first equation,

Hope these are the answers,

Answer 2

Answer:

yaak ri tumkur nimdu 10th class

Nim hesaru en ri tumkur