Question

If x = a, y = b is the solution of the equations x + y = 5 and 2x – 3y = 4, then the values of a and b are respectively (a) 6, -1 (b) 2, 3 (c) 1, 4 (d) 19/5, 6/5

Answer 1

Answer:(d) 19/5, 6/5

=a and y=b is the solution of the equations x+y=5 and 2x-3y=4

To find:

The value of a and b

solution:

x=a and y=b is the solution of the equations x+y=5 and 2x-3y=4}x=a and y=b is the solution of

Step-by-step explanation:

Answer 2

$given \: \\ \\ x \: = \: a \: and \: \: b \: = \: y \: and \: \\ x \: + \: y \: = \: 5... (1) \\ \\ 2x - \: 3y \: = \: \: 4 \: ...(2)\: \\ \\ \\ then \: substitute \: value \: of \: a \: and \: b \: \: \: in \: eq \: (1) \: \: then \: we \: get \: a \: + \: b \: = 5 \: ....(3) \: \\ \\ \: and \: substitute \: the \: value \: of \: a \: and \: b \: we \: get \: \: 2a \: - \: 3b \: = \: 4 \: ....(4) \: \\ \\ from \: eq \: 3 \: a \: = \: 5 - b .....(5) \\ \\ now \: substitute \: eq \: 5 \: in \: eq \: 4 \: \: we \: get \: \: 2(5 - b) \: \: - 3b \: \: = 4 \: \: \: \\ \\ 10 - \: 2b \: - 3b \: \: = \: 4 \: \\ \\ - 5b \: = \: \: - 6 \: \: b \: = \: \frac{6}{5} \: \: now \: substitute \: value \: of \: b \: in \: eq5 \: we \: get \: a \: = \: \: \frac{25}{6} \\ \\ \\ \\ . \\ \\ hence \: the \: value \: of \: b \: = \: \: \frac{6}{5} \: and \: \\ \\ a \: \: = \: \frac{25}{6} \\ \\ \\ hope \: this \: will \: help \: u \: \\ \\ \\ \\ mark \: as \: \: brainliest \: answer \: please \: \: my \: \: friend \:$