Question

the solution of pair of linear equation 3x+2y -7=0and 4x+ y-6=0 is what​

Answer 1

Step-by-step explanation:

$\huge\blue{\underline{\underline{\bf Question}}}$

What is the solution of pair of linear equation 3x+2y -7=0and 4x+ y-6=0

$\huge\blue{\underline{\underline{\bf Answer}}}$

$\leadsto 3x + 2y = 7......(1) \\ \\ \leadsto 4x - y = 6........(2)$

• Multiplying (2) by ×2

$\\ \\ \leadsto 8x - 2y = 12.......(3)$

• Now add (1) and (3)

$\: \: \: \: \: \: 3x + 2y = 7 \\ + \\ \: \: \: \: \: \: 8x - 2y = 12 \\ \\ 11x + 2y - 2y = 12 + 7 \\ \\ 11x = 19 \\ \\ x = \frac{19}{11} \\ \\ 3x + 2y = 7$

..Put x = 19/11

$3 (\frac{19}{11} ) + 2y = 7 \\ \\ 2y = 7 - \frac{57}{11} \\ \\ 2y = \frac{20}{11} \\ \\ y = \frac{10}{11}$

Answer 2

Answer:

X = 1

Y = 2

Step-by-step explanation:

3X+2Y=7  ---------------->(1)

4X+Y=6    ---------------->(2)

(1)  *     1

(2)  *     2

3X+2Y=7

8X+2Y=12

(1)    -     (2)

ON SOLVING WE GET

-5X= -5

X= -5/-5

X= 1

THEN

SUB X IN EQ 1

3+2Y = 7

2Y = 7-3

2Y = 4

Y = 2